They are really booking a lot on the DVD release to me, I look at:
http://www.boxofficemojo.com/movies/?id=batmanbegins.htm and see that this movie cost 150 million to make and yet only has made 126! It was good and I am sure it will make a profit but I think rumors are just too early for a movie that does not look like it has overseas appeal (87% of money from Domestic sales). 57% of take came from opening weekend.
Look at Mr. & Mrs. Smith: Cost 110 has made a 176 million - breakdown: 58 Domestic 42 Overseas, with 48% of take coming from opening weekend.
Hollywood is a numbers game, they talk alot but if BB does not make 250 to 300 at the box office I don't see anything happening.