A few new clips have popped up for The Lodger. Hearing rumors of more of the previous Doctor's faces turning up in this episode also. One of these clips has a line real close to one the Second Doctor had in The Five Doctors.
Also some rumors going around about a 4 Doctor special episode with Matt Smith, David Tennant, Christopher Eccleston, and Paul McGann. Eh, would be cool, but I don't see that happening.