Chinese website Chiphell has leaked what it claims to be pictures of AMD's upcoming Radeon 6000 series graphics cards.
Here's what we have. First, the Radeon HD 6300 "Caicos" card:
And here's the Radeon HD 6800 "Cayman" card:
Not much to go on, but these reference cards mean that the 6000 series isn't that far off now.