My office definitely has at least two draft-N access points to test (and a few flying saucers that I'd linked to earlier), but can't get it to work with the VLAN/BAG/whatever the hell they did set up. The vendors assured us that when we put it in, it'll make an incredible difference, but campus-wise, not everyone's gonna have an n-card, and we'll have to put the AP's where all the old ones are anyway.
But if you don't want to get something until the standards are ratified, I wouldn't hold my breath. I think they've pushed the date back to third or fourth quarter of next year (maybe even later).