A guy on a chinese site, that I could half read, hinted at this. All I could make out was that he obtained a GTX280 and naturally took it apart, with pics showing the latest gpu under the cooler.
I assumed that the run of GTX280 coming out after what seemed to be a 2/3 week vanish of them off the shelves, may well be the case, as the 260-216 was already out (which I figured was the 270).
Whether the one I have now is or not the newer gpu, I aint really bothered, but I edged my bets with a farcry2 pack also.
260x2 ... dunno, not really interested in the benchmarking line of gfxcards, I prefer 1 for 1 for real life action.
Similarly, I'd promote a 4870, but not 4870x2.