It is the dream of many computer enthusiasts to have a mobile system that is at least as powerful (if not as flexible) as their desktops. I know that I personally have spent a small fortune on finding mobile devices that can run all of the rendering and editing software I have without tearing my shoulders off my body. For their part both Intel and AMD have cut the gap between desktop and mobile performance in the CPU world, but mobile GPUs have traditionally lagged way behind their desktop counterparts.
The rumors are ramping up about the next generation of NVidia GPUs. Although we already know that the next GPUs (second-gen Maxwell) will not have the unified memory architecture or 20nm process size that NVidia (and everyone else hoped) that does not mean you will not be getting a good product. However, possible specs and performance are not what the latest rumor is all about. This time the rumblings are about possible launch times.