If my
post
that discusses the improvements for developing data forms in
in VS2005 inspired you to check it out (or check it out
again), then be sure to go through
this post by Steve Lasker the Microsoft PM who is responsible for most
of these features. In his very extensive post, he discusses
many of the changes from Beta1 to Beta2, as well as the
reasoning / thought process that was behind the changes. Note
that many of these changes have already shown up in the recent
CTP releases.