The a750 isn't official yet, but Sony itself has apparently leaked specs early via a registration page. The Alpha a750 would fill the big price gap between the a550 and a850 with a 14.6-megapixel full-frame sensor, and high-speed image processing.

Not much else is known at this point, but it wouldn't be a stretch to think we'll see the a750 at CES 2010. [LetsGoDigital via Engadget]