$(AndroidPackVersionSuffix)=preview.6 (#10149)

Context: https://github.com/dotnet/android/tree/release/10.0.1xx-preview5

We branched for .NET 10 Preview 5 from 7486928 into
`release/10.0.1xx-preview5`; the main branch is now .NET 10 Preview 6.

I also updated `HowToBranch.md`.

Author: jonathanpeppers

Directory.Build.props

@@ -36,7 +36,7 @@
          * Bump first digit of the patch version for feature releases (and reset the first two digits to 0)
     -->
     <AndroidPackVersion>36.0.0</AndroidPackVersion>
-    <AndroidPackVersionSuffix>preview.5</AndroidPackVersionSuffix>
+    <AndroidPackVersionSuffix>preview.6</AndroidPackVersionSuffix>
     <!-- Final value set by GetXAVersionInfo target -->
     <IsStableBuild>false</IsStableBuild>
   </PropertyGroup>

Documentation/guides/HowToBranch.md

@@ -2,20 +2,25 @@
 
 Context: [dotnet/maui#589][0]
 
+Microsoft employees can review the [.NET schedule][4] for upcoming
+releases. We normally branch on during the "Code complete, release
+branch snap and build" window. Sometimes we also wait until a newly
+branded .NET version appears in Maestro updates to `main`.
+
 Let's say that it's time for a hypothetical ".NET 10 Preview 42". The
 sequence of events would be:
 
-1. [dotnet/installer][1] branches `release/10.0.1xx-preview42`
+1. [dotnet/dotnet][1] branches `release/10.0.1xx-preview42`
 
 2. Builds are available on Maestro for `dotnet/android` to consume.
 
 3. `dotnet/android` branches `release/10.0.1xx-preview42`. GitHub Web
    UI is fine for this.
 
-4. Subscribe to Maestro updates for [dotnet/installer][1] `release/10.0.1xx-preview42`:
+4. Subscribe to Maestro updates for [dotnet/dotnet][1] `release/10.0.1xx-preview42`:
 
 ```bash
-darc add-subscription --channel ".NET 10.0.1xx SDK Preview 42" --target-branch "release/10.0.1xx-preview42" --source-repo https://github.com/dotnet/sdk --target-repo https://github.com/dotnet/android
+darc add-subscription --channel ".NET 10.0.1xx SDK Preview 42" --target-branch "release/10.0.1xx-preview42" --source-repo https://github.com/dotnet/dotnet --target-repo https://github.com/dotnet/android
 ```
 
 5. Publish Maestro updates for `dotnet/android/release/10.0.1xx-preview42`:
@@ -35,10 +40,16 @@ See [eng/README.md][2] for details on `darc` commands.
 Note that release candidates will use values such as `rc.1`, `rc.2`, etc.
 
 7. Update the [Xamarin.Android Nightly job][3], so the schedule only
-   runs on desired branches. We likely only need a single .NET 6+
+   runs on desired branches. We likely only need a single .NET 10+
    branch to be on this schedule at a time.
 
+8. When the build is complete, verify the version number is as
+   expected (36.0.0-preview.42.x) and that builds show up on
+   https://maestro.dot.net/ in the appropriate "channel" for
+   dotnet/maui to consume.
+
 [0]: https://github.com/dotnet/maui/issues/598
-[1]: https://github.com/dotnet/installer
+[1]: https://github.com/dotnet/dotnet
 [2]: ../../eng/README.md
 [3]: https://devdiv.visualstudio.com/DevDiv/_apps/hub/ms.vss-ciworkflow.build-ci-hub?_a=edit-build-definition&id=14072&view=Tab_Triggers
+[4]: https://aka.ms/net10-schedule