Well, mostly it's a Beta product - the C# compiler, the IDE and the frameworks version you'll be using are all Beta - If your interest is in learning what's new, it's as close to perfect as you'll get, but you really shouldn't be distributing programs that depend on a beta version of the frameworks - I'm honestly not sure how that'll work. In any case, expect bugs to pop up.

In principle, when the final version of Visual studio comes up, you should be able to projects created in these beta versions, correct errors due to changes or bug fixes during the finalization part of visual studio, and distribute the program.

Note that being a new version of the .net frameworks, it does mean that for a while there'll be less machines out there with it installed than the 1.0 and 1.1 versions, so unless you're distributing the frameworks installer along with your program you'll get the usual objections about having to also download the .net frameworks, which may stop some people from using your programs.