Bet most routers will have it eventually.
Depends. So far, this technology is closely tied to Broadcom, I don't think it supports Qualcomm/Atheros/Marvell.
Welcome To SNBForums
SNBForums is a community for anyone who wants to learn about or discuss the latest in wireless routers, network storage and the ins and outs of building and maintaining a small network.
If you'd like to post a question, simply register and have at it!
While you're at it, please check out SmallNetBuilder for product reviews and our famous Router Charts, Ranker and plenty more!