A new BB Roadmap over at BoyGenius.com has some interesting highlights:
BIS 4.0 Mar-May 2011
BIS 4.1 Jul - Sep 2011
BB OS7 - Oct - Dec 2011
Also a bunch of apps are either out or on the way.
Don't go asking what is in it or anything like that. Your guess is as good as anyone's right now. Rumor only at this point.
Her eis the link: Leaked roadmap reveals BlackBerry OS 7, BIS updates, more | BGR