Though we're not entirely certain about its authenticity, chinese website PCINLIFE has come into contact with a supposed "8800GS" graphics card with 768MB GDDR3 memory onboard. The brand of the card is by a mob most of us wouldn't have heard of before, "Yeston".

There's stacks of images looking at all angles of the card at this link. Unfortunately any more specifics about the card haven't yet been disclosed.