Today, the first service pack for Visual Studio 2008 has shipped:
But it seems that the installer is not very user-friendly:
If you previously installed a Visual Studio 2008 Hotfix, you must run the Hotfix Cleanup Utility before installing Visual Studio 2008 SP1. For more information, see Visual Studio 2008 Hotfix Cleanup Utility for Installing Visual Studio 2008 SP1.
Also, the KB article with the list of all fixes is not yet updated:
Hopefully this SP will fix many bugs 😉