It appears that AMD will debut its upcoming generation of mobile graphics chips during the Consumer Electronics Show 2013, which is held January 8th through 11th in Las Vegas. Expreview reports that the entire next generation, which includes the Mars and Venus chips, will be codenamed 'Solar System'. This is different to the island names the manufacturer used thus far.
Although the exact details remain a mystery for now, it's clear that AMD's new chips will have support for DirectX 11.1, OpenGL 4.3 and OpenCL 1.2. The 28 nm chips will be produced by both GlobalFoundries and TSMC and are likely to feature the second generation of the 'Graphics core Next' architecture. An estimated launch window would be Q2 of 2013.
Earlier, we reported on ASUS' Vivobook, equipped with an HD 8550M graphics card. We originally figured we were dealing with a rebrand, a renamed video chip that has only minor specification changes. Given the new information though, it's quite possible that the notebook features a completely new GPU.