Yea but how expensive will that be...
Well if there will be some reasonable leap, I'll upgrade my whole pc in like a year / year and a half. Or at least gpu if there won't be any major progress in cpu waters. So I think I'm going to buy gtx 7xx later anyway.
What I'm thinking about is what is more efficient solution for me... stick with the 570 till 7xx comes and sell it then, or switch 570 for 660 TI now and when 7xx comes sell the 660 TI.
Btw. I'm going to stick with Nvidia unless some big blow-out comes, because so far in my experience it runs my 3D modelling software more stably than Radeon did.