I Have My Doubts
Well the 802.11n protocol was finally ratified a while ago so that means it's time for engineers to work on the next great thing. In this article they are talking about the next standard which is to be dubbed 802.11ac. They are claiming this next standard will support speeds up to 1Gbps.
But it's their second claim I find doubtful, that this new protocol will be out by 2012. If anybody followed the 802.11n fiasco you'll know it took them forever to finally ratify the standard and get it out the door. I highly doubt they will get the next version out in two years.