Microsoft has released both .NET Framework 3.5 SP1 and Visual Studio 2008 SP1.
Download
Visual Studio 2008 SP1 (ISO)
http://www.microsoft.com/downloads/details.aspx?FamilyId=FBEE1648-7106-44A7-9649-6D9F6D58056E&displaylang=en
.NET Framework 3.5 SP1
http://www.microsoft.com/downloads/details.aspx?FamilyId=AB99342F-5D1A-413D-8319-81DA479AB0D7&displaylang=en
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If you want to avoid the online installer for Visual Studio 2008 SP1, you can run the following from the command line:
VS90sp1-KB945140-ENU.exe /createlayout C:\VS2008\SP1\layout
