I held one in a gun store the other day. The grip, as gaudy as it is with that engraved crap, is actually pretty nice. Trigger was as smooth as any of my other XD/XDM guns have been from the factory. It actually felt a little lighter than the XD I bought earlier this year. I like the fiber optic sight on the front, it makes for a better sight picture.
If I read the propaganda SA put out on it, the serrations on the slide are different (one extra one than the original XD and they are supposedly deeper), and the front of the trigger guard is rounded instead of flat. I'm not sure I like that since I occasionally forget and use a finger on the guard to keep muzzle rise down. But, they claim it makes it easier to slide in and out of holsters.
I'm somewhat reserving judgement on getting one until I can find out if a PRP or SP trigger can be put in it.