AMD Set to Unveil 12 DirectX 11 GPUs at CES 2010
 

The Radeon HD 5600/5500 (codenamed Redwood) series is expected to replace HD4600 series. The leaked information indicated that Radeon HD 5670 features 400 stream processors, GDDR5 memory, 128-bit of memory interface, DisplayPort/DVI/VGA ports, and support for Eyefinity technology. Additionally, the Radeon HD 5400/5300 is reportedly designed to take the place of HD4550/4350. The above mentioned cards are expected to sell around or below US$90.

http://en.expreview.com/2009/12/28/a...2010/6251.html