The rumor going around is that the A77 will shoot 12FPS - we'll see...
I heard 20 fps, and a built-in coffee maker. But that may not have been the most reliable of rumors...
The Sony Alpha Rumors site, with a big "picture cannot be found" image from some online imagehost, marked it an SR4, whatever that means. I actually read it somewhere else (which seemed a bit more upscale).
If the A77 follows the price progression of the A33 and the A55, it'll be somewhere around $1000, maybe over that mark by a good deal. With a 24mpix sensor, you'll definitely need a good memory card to get quick transfer rates. I personally have trouble seeing 12fps even on a $1500 body, even if it will be a couple years newer in design than the 7D.