Bot Service Improvements update

Moved DirectLine Speech to GA; tweaked Direct Line ASE description.

whats-new.md

@@ -34,9 +34,9 @@ This page summarizes key new features and improvements in Bot Framework and Azur
 [113]:https://github.com/microsoft/BotFramework-Composer/blob/master/README.md
 
 ## Bot Framework Channels
-- [Direct Line Speech (public preview)](https://aka.ms/streaming-extensions) | [docs](https://docs.microsoft.com/azure/bot-service/directline-speech-bot?view=azure-bot-service-4.0): Bot Framework and Microsoft's Speech Services provide a channel that enables streamed speech and text bi-directionally from the client to the bot application using WebSockets.  
+- [Direct Line Speech General Availability](https://aka.ms/streaming-extensions) | [docs](https://docs.microsoft.com/azure/bot-service/directline-speech-bot?view=azure-bot-service-4.0): Bot Framework and Microsoft's Speech Services provide a channel that enables streamed speech and text bi-directionally from the client to the bot application using WebSockets.  
 
-- [Better isolation for your bot: Direct Line VNet (public preview)](https://portal.azure.com) | [docs](https://aka.ms/directline-ase): A version of Direct Line that allows bots to participate in Azure VNet. A VNet lets you create your own private space in Azure and is crucial to your cloud network as it offers isolation, segmentation, and other key benefits. 
+- [A Private Direct Line: Direct Line App Serive Extension (preview)](https://portal.azure.com) | [docs](https://aka.ms/directline-ase): A version of Direct Line that isolates your bot from other traffic on the Bot Service by running Direct Line on its Azure App Service. This both improves latency, and allows bots to participate in Azure VNET configuraitons. A VNET lets developers create your own private space in Azure and is crucial to your cloud network as it offers isolation, segmentation, and other key benefits.
 
 ## Bot Framework SDK
 - [Adaptive Dialog (SDK v4.6 preview)](https://github.com/Microsoft/BotBuilder-Samples/tree/master/experimental/adaptive-dialog#readme) | [docs](https://github.com/Microsoft/BotBuilder-Samples/tree/master/experimental/adaptive-dialog/docs) | [C# samples](https://github.com/Microsoft/BotBuilder-Samples/tree/master/experimental/adaptive-dialog/csharp_dotnetcore):