ATI Mobility Radeon HD 560V ships with 320 stream processors and looks to be the equivalent of Mobility Radeon HD 4670.
ATI Mobility Radeon HD 540V/530V has 80 stream processors in 55nm suit,which matches Mobility Radeon HD 4500 and Mobility Radeon HD 4300.
Interestingly the older Mobility Radeon HD 4000 series is still listed right next to the new HD 500V series. Exactly what AMD has in mind is a bit unclear, but what we do know is that Mobility Radeon HD 500V doesn’t bring DirectX 11 or 40nm technology.