Added kernel-release-notes.md (#738)

* Added kernel-release-notes.md

Author: craigloewen-msft

WSL/kernel-release-notes.md

@@ -0,0 +1,36 @@
+---
+title: Release Notes for Windows Subsystem for Linux kernel
+description: Release notes for the Windows Subsystem for Linux.  Updated monthly.
+keywords: release notes, wsl, windows, windows subsystem for linux, windowssubsystem, ubuntu, kernel
+author: crloewen
+ms.date: 06/09/2020
+ms.topic: article
+ms.localizationpriority: high
+---
+
+# Release Notes for Windows Subsystem for Linux kernel
+
+We've added support for WSL 2 distributions, [which use a full Linux kernel](https://devblogs.microsoft.com/commandline/shipping-a-linux-kernel-with-windows/). This Linux kernel is open source, with its source code available at the [WSL2-Linux-Kernel](https://github.com/microsoft/WSL2-Linux-Kernel) repository. This Linux kernel is delivered to your machine via Microsoft Update, and follows a separate release schedule to the Windows Subsystem for Linux which is delivered as part of the Windows image.
+
+## 4.19.121-microsoft-standard
+*Release Date*: Prerelease
+
+[Official Github release link](https://github.com/microsoft/WSL2-Linux-Kernel/releases/tag/4.19.104-microsoft-standard).
+
+* Drivers: hv: vmbus: hook up dxgkrnl
+* Added support for GPU Compute
+
+## 4.19.104-microsoft-standard
+*Release Date*: 06/09/2020 
+
+[Official Github release link](https://github.com/microsoft/WSL2-Linux-Kernel/releases/tag/4.19.104-microsoft-standard).
+
+* Update WSL config for 4.19.104
+
+## 4.19.84-microsoft-standard
+*Release Date*: 11/12/2019 
+
+[Official Github release link](https://github.com/microsoft/WSL2-Linux-Kernel/releases/tag/4.19.84-microsoft-standard).
+
+* This is the 4.19.84 stable release
+

WSL/toc.yml

@@ -42,5 +42,9 @@
   href: wsl2-faq.md
 - name: Troubleshooting
   href: troubleshooting.md
-- name: Release Notes
-  href: release-notes.md
+- name : Release Notes
+  items:
+    - name: General Release Notes
+      href: release-notes.md
+    - name: Linux kernel Release Notes
+      href: kernel-release-notes.md