Rumor New ps3 Model to surface e3?

Wallmart has sent out a memo to all retailers that the 40 gig ps3 is to be replace this agust what does this mean?  there rumors that it may just be a same model with dual shock 3 controller or perhaps a 40 gig with backward compatibilty with ps2 games we shall hopefully see something soon heres a article

http://www.joystiq.com/2008/07/08/r...aced-in-august/