The Dark Knight BOF Reports: Nolan and Goyer talk sequel.

[Cinemaman]

I think Nolans fture looks a littel ike this

The Prestige 2006
Untitled Batman Begins sequel 2008
The Exec 2009
Batman sequel (3) 2011

he's got quite ahead of him

And what about Batman future?

Batman Sequel (2) - June 18th
Batman Sequel (3) - June 22th

So I think BB2 filming will start in March 2007 and end in August 2007.