AVG Free just released V9.0.
But I wouldn't use it just yet. Apparently, some users have commented, (on the AVG Free forum), that it disabled windows defender, and also, during installation, it requires the user to uninstall both Zone Alarm, (not sure if it's both free and paid, or what), and comodo free firewall.
Since I use comodo, I installed V9.0 without uninstalling comodo, and AVG was unable to update. I, along with others have posted complaints about this on the AVG Free forum, but it'll take a while for something to happen.
I use Spybot Search & Destroy, and (as a backup), spywareblaster, along with AVG Free and Comodo Free firewall, (with the anti-virus disabled). I'm currently testing Avira Free while waiting for a fix for AVG Free V9.0.
Wabb