Well, first up InfoPath has clearly not really been changed much apart from the obvious Icon change!
My most important hoped for (& prayed for) fix is that I would be able to access the new & old values of a field during the validating event, however this is not fixed! I am really not happy about this, have they done anything to infopath other than the icon change!?! See screen shot below for details :

 

Screencap of Validating Event Args

 

oh and why are the InfoPath team so utterly useless at responding to questions in their forum, especially when they refuse to take questions through their blog and direct you to the forum, where everyone there is just the community and are doing their best with this heap o' junk that Ms are pushing out the door! Man I'm not happy!

 

What a joke! Should I even bother reviewing the 27 issues that I have had with InfoPath B2 against the TR release, I suspect not, but since the customer needs this, I suppose I should waste some more time on this!!!