Today the Visual studio team announced the availability of the Visual Studio 2010 Release Candidate. I have been using this version internally for a little while and am very happy with the progress and performance of my SharePoint development. This build of VS will work with the public Beta version of SharePoint.
http://channel9.msdn.com/posts/Charles/Jason-Zander-Visual-Studio-2010-Release-Candidate/
Jason gives it 2 thumbs up.