The first draft of another wireless standard was approved earlier this month. The 802.11n standard is specifically for wireless local area networks with a theoretical speed that should reach 540 megabits per second. The next step in the standards process is balloting, in which issues are raised and, hopefully, dealt with. If there are no major problems, we could see a standard in late summer.
According to vendor sources, you should start to see 802.11n products by mid-year. If you decide to purchase before the standard is set, be sure the product is upgradeable to the standard.