-I heard Jan. 30th,
-Some GDDR-4 ammount greater than 512
-64 FOUR WAY shaders (this is a marketing thing, hence "nVidia may have 2x the shaders as us, but our shaders do 4x the work")
Then, pretty much what everyone else said
BTW, i'd wait, cause think of it this way. Why would ATi take an extra, what, 4-5 months, and release a lesser performing card? Come on, if ATi did this, they would be screwed.