This information, I got from my friends of managerfifa.com ( Official Fansite of Fifa Manager 11 )

New Features on 3D

*Action Mode has been revised
*Improved AI
*FIFA11 owners can now play Full “Team Control”.
*Overlays with individual color themes for each competition
*New option to change the player in the career mode
*After three strong games in the career mode you can now give out a bonus

This info is private and only for official sites. This is going to make public in the coming days. Waiting for the official announcement
Cheers