There are many nagging bugs that need to be worked out in Visual Studio 2010, particularly in its testing tools. But the big news won't be which bugs are fixed; it will deal with what Microsoft decides to do about licensing. Visual Studio pros know that the 2008 SKU model will not work for VS 2010. For example, there is a new testing edition of VS 2010 that will require a different approach than what Microsoft presently takes. I expect some big announcements before Beta 2 ships to build momentum going into PDC in November. MIcrosoft has not confirmed that there will be a second beta.