ChipHell published a leaked die shot of AMD's upcoming Barts (Radeon HD 6800) GPU.
A Chiphell poster has leaked blurred picture of a Barts die. Like Juniper, it is rectangular in shape, but rotated 45 degrees, like Cypress, and features a very similar package. This is no surprise, as Barts is pin-compatible with Cypress. The Barts die is compared to Cypress, and a rough die size is posted (albeit with dubious measurement methods) of 230 mm².
Additionally, a leaked Catalyst driver for the Radeon HD 6800 series was published over at Station Drivers.