is it really a big deal? There will be new single card solutions that historically have managed to push the same numbers as the last gen's CF/SLI. I always thought the x2 cards were epeen for the card makers, just trying to claim "fastest single card" rights.
I guess it would be a bummer if you had one, and were wanting to go quad. But at $400-500 per card, you could get 4 4870s and a new mobo to rock quad CF.