Here's a quick rundown of all the latest and newest stuff that didn't work in 10.7.4 that now works in 10.8 natively.
Intel 3rd Generation Core i5/i7 Ivy Bridge CPUs
Native kernel and power management support in OS X Mountain Lion
Intel HD 4000 Onboard Graphics
Use DVI port, and you may have to unplug and replug for full support
NVIDIA GeForce 6xx Series
Works natively without any injection- use GraphicsEnabler=No
Native support for "Cactus Ridge" controllers. No hotswap support yet- device needs to be plugged at boot.
All of this new support is very exciting- we need everyone to test if they have the new hardware, and report their findings. I'm sure we'll make all of this work great with little to no tweaking eventually. Make a new thread in the Mountain Lion forums, or leave a comment here.