diff --git a/.cron.yml b/.cron.yml
index 33e1af2c4f1d..04422d22c789 100644
--- a/.cron.yml
+++ b/.cron.yml
@@ -29,8 +29,6 @@ jobs:
           - mozilla-central
       when:
           by-project:
-              # `l10n-bumper` job should have enough time to finish before this
-              # job runs
               mozilla-central: [{hour: 10, minute: 0}, {hour: 22, minute: 0}]
               # No default
 
@@ -277,12 +275,14 @@ jobs:
           treeherder-symbol: l10n-bump
           target-tasks-method: l10n_bump
       run-on-projects:
+          - autoland
           - mozilla-central
           - mozilla-beta
       when:
           by-project:
               # 3h15m before launch of `nightly-desktop`
-              mozilla-central: [{hour: 6, minute: 45}, {hour: 18, minute: 45}]
+              autoland: [{hour: 6, minute: 45}, {hour: 18, minute: 45}]
+              mozilla-central: []
               # 3h15m before launch of `daily-releases`
               mozilla-beta: [{hour: 18, minute: 45}]
               # No default
diff --git a/taskcluster/ci/config.yml b/taskcluster/ci/config.yml
index fc610d46bd25..28f6ebe7c6ba 100644
--- a/taskcluster/ci/config.yml
+++ b/taskcluster/ci/config.yml
@@ -555,7 +555,10 @@ workers:
             worker-type:
                 by-release-level:
                     production: '{trust-domain}-3-tree'
-                    staging: '{trust-domain}-1-tree'
+                    staging:
+                        by-project:
+                            autoland: '{trust-domain}-3-tree'
+                            default: '{trust-domain}-1-tree'
         tree-dev:
             provisioner: scriptworker-k8s
             implementation: treescript
diff --git a/taskcluster/ci/l10n-bump/kind.yml b/taskcluster/ci/l10n-bump/kind.yml
index 396e1ee51e9e..2dd21e40689d 100644
--- a/taskcluster/ci/l10n-bump/kind.yml
+++ b/taskcluster/ci/l10n-bump/kind.yml
@@ -8,7 +8,6 @@ transforms:
     - gecko_taskgraph.transforms.release_version_bump:transforms
     - gecko_taskgraph.transforms.task:transforms
 
-
 job-defaults:
     worker-type: tree
     worker:
@@ -19,15 +18,20 @@ job-defaults:
             by-project:
                 mozilla-beta: false
                 default: true
-        ignore-closed-tree: false
+        ignore-closed-tree:
+            by-project:
+                autoland: true
+                default: false
         push:
             by-project:
                 mozilla-(central|beta): true
+                autoland: true
                 default: false
         source-repo:
             by-release-type:
                 beta: https://hg.mozilla.org/releases/mozilla-beta
-                default: https://hg.mozilla.org/mozilla-central
+                nightly: https://hg.mozilla.org/mozilla-central
+                default: https://hg.mozilla.org/integration/autoland
         l10n-bump-info:
             by-release-type:
                 # XXX whenever the `beta` config changes, make sure to make
@@ -52,23 +56,27 @@ job-defaults:
                             - win64-devedition
                             - win64-aarch64
                             - win64-aarch64-devedition
-                    platform-configs: [{
-                        "platforms": [
-                            "linux",
-                            "linux-devedition",
-                            "linux64",
-                            "linux64-devedition",
-                            "macosx64",
-                            "macosx64-devedition",
-                            "win32",
-                            "win32-devedition",
-                            "win64",
-                            "win64-devedition",
-                            "win64-aarch64",
-                            "win64-aarch64-devedition",
-                        ],
-                        "path": "browser/locales/shipped-locales",
-                    }]
+                    platform-configs:
+                        [
+                            {
+                                "platforms":
+                                    [
+                                        "linux",
+                                        "linux-devedition",
+                                        "linux64",
+                                        "linux64-devedition",
+                                        "macosx64",
+                                        "macosx64-devedition",
+                                        "win32",
+                                        "win32-devedition",
+                                        "win64",
+                                        "win64-devedition",
+                                        "win64-aarch64",
+                                        "win64-aarch64-devedition",
+                                    ],
+                                "path": "browser/locales/shipped-locales",
+                            },
+                        ]
                 default:
                     name: Firefox l10n changesets
                     path: browser/locales/l10n-changesets.json
@@ -89,23 +97,27 @@ job-defaults:
                             - win64-devedition
                             - win64-aarch64
                             - win64-aarch64-devedition
-                    platform-configs: [{
-                        "platforms": [
-                            "linux",
-                            "linux-devedition",
-                            "linux64",
-                            "linux64-devedition",
-                            "macosx64",
-                            "macosx64-devedition",
-                            "win32",
-                            "win32-devedition",
-                            "win64",
-                            "win64-devedition",
-                            "win64-aarch64",
-                            "win64-aarch64-devedition",
-                        ],
-                        "path": "browser/locales/all-locales",
-                    }]
+                    platform-configs:
+                        [
+                            {
+                                "platforms":
+                                    [
+                                        "linux",
+                                        "linux-devedition",
+                                        "linux64",
+                                        "linux64-devedition",
+                                        "macosx64",
+                                        "macosx64-devedition",
+                                        "win32",
+                                        "win32-devedition",
+                                        "win64",
+                                        "win64-devedition",
+                                        "win64-aarch64",
+                                        "win64-aarch64-devedition",
+                                    ],
+                                "path": "browser/locales/all-locales",
+                            },
+                        ]
 
 jobs:
     l10n-bumper:
diff --git a/taskcluster/gecko_taskgraph/config.py b/taskcluster/gecko_taskgraph/config.py
index bb4af2bb8649..86bbae1a4d10 100644
--- a/taskcluster/gecko_taskgraph/config.py
+++ b/taskcluster/gecko_taskgraph/config.py
@@ -107,7 +107,7 @@ graph_config_schema = Schema(
                     Required("implementation"): str,
                     Required("os"): str,
                     Required("worker-type"): optionally_keyed_by(
-                        "level", "release-level", str
+                        "level", "release-level", "project", str
                     ),
                 }
             },
diff --git a/taskcluster/gecko_taskgraph/morph.py b/taskcluster/gecko_taskgraph/morph.py
index 566ccd00aaf7..d3abc1711f66 100644
--- a/taskcluster/gecko_taskgraph/morph.py
+++ b/taskcluster/gecko_taskgraph/morph.py
@@ -29,7 +29,6 @@ from taskgraph.graph import Graph
 from taskgraph.task import Task
 from taskgraph.taskgraph import TaskGraph
 
-from .util.attributes import release_level
 from .util.workertypes import get_worker_type
 
 here = os.path.abspath(os.path.dirname(__file__))
@@ -71,7 +70,9 @@ def derive_misc_task(
     image_taskid = label_to_taskid["docker-image-" + image]
 
     provisioner_id, worker_type = get_worker_type(
-        graph_config, "misc", parameters["level"], release_level(parameters["project"])
+        graph_config,
+        parameters,
+        "misc",
     )
 
     deps = copy.copy(dependencies)
diff --git a/taskcluster/gecko_taskgraph/test/test_transforms_job.py b/taskcluster/gecko_taskgraph/test/test_transforms_job.py
index 43bfef1bf4fa..ef7181b466e6 100644
--- a/taskcluster/gecko_taskgraph/test/test_transforms_job.py
+++ b/taskcluster/gecko_taskgraph/test/test_transforms_job.py
@@ -45,6 +45,7 @@ def config():
             "head_repository": "http://hg.example.com",
             "head_rev": "abcdef",
             "level": 1,
+            "project": "example",
         }
     )
     return TransformConfig(
diff --git a/taskcluster/gecko_taskgraph/transforms/build.py b/taskcluster/gecko_taskgraph/transforms/build.py
index dad5e6ec81e8..553709879e29 100644
--- a/taskcluster/gecko_taskgraph/transforms/build.py
+++ b/taskcluster/gecko_taskgraph/transforms/build.py
@@ -27,7 +27,7 @@ def set_defaults(config, jobs):
         job["treeherder"].setdefault("kind", "build")
         job["treeherder"].setdefault("tier", 1)
         _, worker_os = worker_type_implementation(
-            config.graph_config, job["worker-type"]
+            config.graph_config, config.params, job["worker-type"]
         )
         worker = job.setdefault("worker", {})
         worker.setdefault("env", {})
@@ -172,7 +172,7 @@ def use_profile_data(config, jobs):
         job["worker"]["env"].update({"TASKCLUSTER_PGO_PROFILE_USE": "1"})
 
         _, worker_os = worker_type_implementation(
-            config.graph_config, job["worker-type"]
+            config.graph_config, config.params, job["worker-type"]
         )
         if worker_os == "linux":
             # LTO linkage needs more open files than the default from run-task.
diff --git a/taskcluster/gecko_taskgraph/transforms/job/__init__.py b/taskcluster/gecko_taskgraph/transforms/job/__init__.py
index b2a6e0752475..0f27b6b73b8b 100644
--- a/taskcluster/gecko_taskgraph/transforms/job/__init__.py
+++ b/taskcluster/gecko_taskgraph/transforms/job/__init__.py
@@ -133,7 +133,9 @@ def rewrite_when_to_optimization(config, jobs):
 @transforms.add
 def set_implementation(config, jobs):
     for job in jobs:
-        impl, os = worker_type_implementation(config.graph_config, job["worker-type"])
+        impl, os = worker_type_implementation(
+            config.graph_config, config.params, job["worker-type"]
+        )
         if os:
             job.setdefault("tags", {})["os"] = os
         if impl:
@@ -163,7 +165,7 @@ def add_resource_monitor(config, jobs):
     for job in jobs:
         if job.get("attributes", {}).get("resource-monitor"):
             worker_implementation, worker_os = worker_type_implementation(
-                config.graph_config, job["worker-type"]
+                config.graph_config, config.params, job["worker-type"]
             )
             # Normalise worker os so that linux-bitbar and similar use linux tools.
             worker_os = worker_os.split("-")[0]
diff --git a/taskcluster/gecko_taskgraph/transforms/release_version_bump.py b/taskcluster/gecko_taskgraph/transforms/release_version_bump.py
index 40bcd237cf8f..a0f3f69d05eb 100644
--- a/taskcluster/gecko_taskgraph/transforms/release_version_bump.py
+++ b/taskcluster/gecko_taskgraph/transforms/release_version_bump.py
@@ -21,7 +21,12 @@ def handle_keyed_by(config, tasks):
     ]
     for task in tasks:
         fields = default_fields[:]
-        for additional_field in ("l10n-bump-info", "source-repo", "dontbuild"):
+        for additional_field in (
+            "l10n-bump-info",
+            "source-repo",
+            "dontbuild",
+            "ignore-closed-tree",
+        ):
             if additional_field in task["worker"]:
                 fields.append(f"worker.{additional_field}")
         for field in fields:
diff --git a/taskcluster/gecko_taskgraph/transforms/repackage.py b/taskcluster/gecko_taskgraph/transforms/repackage.py
index 9d68882d1ad3..a72559accec7 100644
--- a/taskcluster/gecko_taskgraph/transforms/repackage.py
+++ b/taskcluster/gecko_taskgraph/transforms/repackage.py
@@ -475,7 +475,7 @@ def make_job_description(config, jobs):
 
         worker["artifacts"] = _generate_task_output_files(
             dep_job,
-            worker_type_implementation(config.graph_config, worker_type),
+            worker_type_implementation(config.graph_config, config.params, worker_type),
             repackage_config=repackage_config,
             locale=locale,
         )
diff --git a/taskcluster/gecko_taskgraph/transforms/repackage_partner.py b/taskcluster/gecko_taskgraph/transforms/repackage_partner.py
index d5f7b98923a6..f71b24b5f9b4 100644
--- a/taskcluster/gecko_taskgraph/transforms/repackage_partner.py
+++ b/taskcluster/gecko_taskgraph/transforms/repackage_partner.py
@@ -177,7 +177,7 @@ def make_job_description(config, jobs):
 
         worker["artifacts"] = _generate_task_output_files(
             dep_job,
-            worker_type_implementation(config.graph_config, worker_type),
+            worker_type_implementation(config.graph_config, config.params, worker_type),
             repackage_config,
             partner=repack_id,
         )
diff --git a/taskcluster/gecko_taskgraph/transforms/task.py b/taskcluster/gecko_taskgraph/transforms/task.py
index e45b2f70d6d5..8181992989ff 100644
--- a/taskcluster/gecko_taskgraph/transforms/task.py
+++ b/taskcluster/gecko_taskgraph/transforms/task.py
@@ -1431,7 +1431,9 @@ def set_implementation(config, tasks):
             yield task
             continue
 
-        impl, os = worker_type_implementation(config.graph_config, task["worker-type"])
+        impl, os = worker_type_implementation(
+            config.graph_config, config.params, task["worker-type"]
+        )
 
         tags = task.setdefault("tags", {})
         tags["worker-implementation"] = impl
@@ -1820,9 +1822,8 @@ def build_task(config, tasks):
         else:
             provisioner_id, worker_type = get_worker_type(
                 config.graph_config,
+                config.params,
                 task["worker-type"],
-                level=level,
-                release_level=release_level(config.params["project"]),
             )
         task["worker-type"] = "/".join([provisioner_id, worker_type])
         project = config.params["project"]
diff --git a/taskcluster/gecko_taskgraph/util/workertypes.py b/taskcluster/gecko_taskgraph/util/workertypes.py
index 0b970c425d55..aafa4fe56b03 100644
--- a/taskcluster/gecko_taskgraph/util/workertypes.py
+++ b/taskcluster/gecko_taskgraph/util/workertypes.py
@@ -2,7 +2,7 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-
+from gecko_taskgraph.util.attributes import release_level as _release_level
 from mozbuild.util import memoize
 from taskgraph.util.attributes import keymatch
 from taskgraph.util.keyed_by import evaluate_keyed_by
@@ -20,7 +20,7 @@ WORKER_TYPES = {
 
 
 @memoize
-def _get(graph_config, alias, level, release_level):
+def _get(graph_config, alias, level, release_level, project):
     """Get the configuration for this worker_type alias: {provisioner,
     worker-type, implementation, os}"""
     level = str(level)
@@ -61,10 +61,13 @@ def _get(graph_config, alias, level, release_level):
             "alias": alias,
         }
     )
+    attrs = {"level": level, "release-level": release_level}
+    if project:
+        attrs["project"] = project
     worker_config["worker-type"] = evaluate_keyed_by(
         worker_config["worker-type"],
         f"worker-type alias {alias} field worker-type",
-        {"level": level, "release-level": release_level},
+        attrs,
     ).format(
         **{
             "trust-domain": graph_config["trust-domain"],
@@ -76,18 +79,26 @@ def _get(graph_config, alias, level, release_level):
     return worker_config
 
 
-def worker_type_implementation(graph_config, worker_type):
+def worker_type_implementation(graph_config, parameters, worker_type):
     """Get the worker implementation and OS for the given workerType, where the
     OS represents the host system, not the target OS, in the case of
     cross-compiles."""
-    worker_config = _get(graph_config, worker_type, "1", "staging")
+    worker_config = _get(
+        graph_config, worker_type, "1", "staging", parameters["project"]
+    )
     return worker_config["implementation"], worker_config.get("os")
 
 
-def get_worker_type(graph_config, worker_type, level, release_level):
+def get_worker_type(graph_config, parameters, worker_type):
     """
     Get the worker type provisioner and worker-type, optionally evaluating
     aliases from the graph config.
     """
-    worker_config = _get(graph_config, worker_type, level, release_level)
+    worker_config = _get(
+        graph_config,
+        worker_type,
+        parameters["level"],
+        _release_level(parameters.get("project")),
+        parameters.get("project"),
+    )
     return worker_config["provisioner"], worker_config["worker-type"]
diff --git a/tools/tryselect/task_config.py b/tools/tryselect/task_config.py
index e2e0c4d05d79..c9b6e8781119 100644
--- a/tools/tryselect/task_config.py
+++ b/tools/tryselect/task_config.py
@@ -505,10 +505,7 @@ class WorkerOverrides(TryConfig):
                     )
                     sys.exit(1)
                 provisioner, worker_type = get_worker_type(
-                    graph_config,
-                    alias,
-                    level="1",
-                    release_level="staging",
+                    graph_config, worker_type=alias, parameters={"level": "1"}
                 )
                 overrides[alias] = "{provisioner}/{worker_type}{suffix}".format(
                     provisioner=provisioner, worker_type=worker_type, suffix=suffix