Geforce GTX 570M und GTX 580M announced
Both new cards are based on the GF114 and therefore profit from the power optimized chip compared to the older GeForce GTX 485M. Therefore, Nvidia managed to get a higher performance at the same power consumption.
More information and benchmarks can be found on the graphics card pages:
The three new graphic solutions for laptops will arrive in Clevo based laptops (P170HM3 - 580M, P270WN - 580M SLI), in the Dell Alienware M18x (580M SLI) and the MSI GT780R (570M).