There are a number of other IEEE working groups currently devoted to solving a number of wireless issues. A few examples to keep an eye on are:
802.11d General internationalization issues
802.11e QOS support for a, b, g
802.11f IAPP: Inter-Access Point Protocol (roaming between APs)
802.11i Security (WEP, 802.1x, TKIP, AES, etc.)
You can get more information about the IEEE and the 802.11 working groups at: http://grouper.ieee.org/groups/802/11/.