Seems that Scott Gu has announced the release of the VS2008 and .net 3.5 sp1 release, looks like they've released a lot of fixes.

http://weblogs.asp.net/scottgu/archive/2008/05/12/visual-studio-2008-and-net-framework-3-5-service-pack-1-beta.aspx

Quite Suprised that asp.net mvc frameword isn't part of this release. I do vaguely remember there being a mention of asp.net 3.5 extenstions that it maybe part of. One good point is it will give me chance to compare nhibernate with entty framework properly.