Does anyone know exactly when the 8900s are going to come out, how much they are going to be, and how much better they are going to be over an 8800GTS 640? The reason I ask is because I was wondering if I can still use the step up program in time for them to come out, and how much they are going to be. I can get a 30 rebate for my GPU but if I can't do the step-up ting. See where I am going. Any help would be nice. Thanks.