I can't say anything about upcoming products whether they exist or not.
Yet, sometimes I have to question the use of waiting for what amounts to rumors and not much else. If we all did that, no one would ever buy another GPU, CPU or ram because something bigger and better wil always be around the corner. Sure, I am positive Nvidia has something coming that will knock our socks off...and so will ATI. But there is one thing you should ask yourself....
Will it cost less than $450?