Add link to package announcement (#9560)

Author: richlander

linux.md

@@ -41,7 +41,7 @@ Microsoft offers alternate package feeds at [packages.microsoft.com](http://pack
 They are documented at [Install .NET on Linux](https://learn.microsoft.com/dotnet/core/install/linux).
 You can move back and forth between distribution and Microsoft archives using a variety of [package manager patterns](https://learn.microsoft.com/dotnet/core/install/linux-package-mixup) and [previous challenges](https://github.com/dotnet/core/issues/7699) to guide you.
 
-Microsoft is [no longer publishing packages for Ubuntu starting with Ubuntu 24.04](https://github.com/dotnet/core/discussions/9258).
+Microsoft is [no longer publishing packages for Ubuntu starting with Ubuntu 24.04](https://github.com/dotnet/core/discussions/9258) and other distros with [.NET 9 Package Publishing](https://github.com/dotnet/core/discussions/9556).
 
 [SDK feature bands](https://learn.microsoft.com/dotnet/core/releases-and-support#feature-bands-sdk-only) are the only significant difference between Microsoft and distro-provided builds. Distro-provided SDK builds are always within the `.1xx` feature band, while Microsoft SDK builds are always for the latest feature band, for example `.2xx`.