AvatarSpirit and rufftoon (from DeviantART) have announced this link of the Season 3 looks for the Avatar characters!!
http://www.tvshowsondvd.com/newsitem.cfm?NewsID=7629
It didn't work last time I posted this, might just lead you to their homepage. Anyway, the direct link, for sure, is in the Season 3 Speculation thread.
EDIT: Might I add that pooldude's site also announced this.
TMT, writer of The Outcast