There is some amazing news on the next expansion coming out of a Gamespy article with some of the developers. Some of the highlights?

The Death Knight explained.

In a move that is already creating debate and controversy...Raiding will be undergoing some big changes. There will be no attunements to any 10/25 man raid in WotLK, and any 25man raid will have a 10 man version. This is HUGE news, and seen by many as a 'step in the right direction'. Others feel that Blizz is way off base here. Time will tell. 

There are also a few more tidbits that have come out.