We are in a middle of a rollout of Win7 across all of our campuses, and I will say that Windows 7 has been unbelievable improvement.

We have a ton of Dell computers that were rated as Vista Basic compatible (yes, intel gma) and the performance increase over Windows XP on the same machine is unbelievable.  To hear that the same performance requirements for Windows 8 is the same for Windows 7 gives me hope. 

As soon as the beta bits for Windows 8 hit, I will get a better idea of where we stand, but for now I am pleased with the performance in Windows 7.