Wi-Fi Planet's Article on it being ratified!
Anyways, the big news is it now uses AES insetad of RC4 and WPA instead of WEP. WPA2 or 802.11i is the newer version w/AES, WPA1 was RC4 with 802.1x+EAP+MIC+TKIP.
There are many more articles out there, but I'd do a tutorial if asked ;-)
