After the initial release of the Team Suite on the MSDN, I just saw that also the VS 2008 Express Editions and the trial versions of VSTS (Professional version still to come) have been released.
In addition also the .NET Framework 3.5 is available as standalone download.
And while we are talking about VS2008 related downloads here are a few others I think are quite useful:
And as usual ScottGu just wrote a Quick Tour of the New Features of VS2008 and .NET 3.5.
And now, waiting for my download to complete.