VideoCardz claims October 8th is the launch date of AMD's Radeon R9 280X, and the site also dug up some specifications of ASUS' Radeon R9 270X DirectCU II TOP, Radeon R9 280X DirectCU II TOP and Radeon R9 280X ROG Matrix.
The NDA on 280X will be lifted on October 8th. This is when reviewers are allowed to publish their reviews. Cards with aftermarket cooling solutions will be shown few days later. The embargo date on 270X is still unknown.
On Chinese forums you can find interesting threads about a mysterious announcement happening between Oct 12th to 20th in Beijing. It’s supposedly an official showcase of R9 and R7 graphics cards from the main Radeon suppliers, like Onda, Sapphire, PowerColor, HIS Digital, XFX or Unika.
German tech site ComputerBase on the other hand says October 8th will not only see the launch of the R9 280X but that a total of five cards will be unveiled that day. Besides the R9 280X, you can also expect the R9 270X, R7 260X, R7 250 and R7 240 if this rumor is correct. The Radeon R9 290X flagship is expected to follow on October 15th, but actual retail availability is still somewhat of a mystery.