Security is a very fast advancing field and you will find that if you are out of touch for even a short period of a couple of months, part of your knowledge may become obsolete. In order to stay up-to-date, we recommend using the following avenues:
http://www.securityfocus.com/ has multiple mailing lists, which are focused discussion groups for technical discussions. Among others, we would recommend subscribing to the
Wifisec@securityfocus.com to stay in touch with the latest updates in the field.
The Aircrack-NG site is the best resource to stay updated on new tools in this suite. Created by Thomas d'Otreppe a.k.a Mister_X this is probably the best tool out there for WLAN hacking: