Lots of WInMo 7 news by the way, just to get back on topic...
It will be announced next month at the Mobile World Congress, and it will be backwards compatible:
http://www.phonenews.com/windows-mob...surfaces-9990/
And the big news, it will NOT be based on Win CE:
http://forum.xda-developers.com/showthread.php?t=618631
So there you go folks, back on topic...