No way in hell is Anubis someone new. Why completly shoud the face of someone if we've never seen them before?
I was talking this over with someone yesterday, and I came to the following conclusions:
Apofis = Not Anubis. He was on a ship infested with replicators when it crashed on a planet and exploded. He was forced to remain in one stationary spot due to the abundance of replicators. He was traped on the bridge, away from any gliders or transport rings. He had nothing to protect himself but his personal forcefield. He could not have survived...hell, his body can't even be in one piece now.
Socar = Not Anubis. He was stranded on a moon(?) when it exploded.
Hathor = Not Anubis. Dispite her atempts to raise genetically superior soldiers on Cassy's planet, Hathor has always been one to use minimal deception in favor of direct atempts to controll. WHile she has tried to decieve before, it is not in her character to do anything really long term.
any of the System Lords = Not Anubis. Not only are they too petty and vain, they've also always been far too busy with power struggles between themselves.
...so who do I think is a possible candidate for Anubis?
Tanith.
The problem with Tanith is that he was on a planet in a system that was distroyed when SG-1 blew up that system's sun...however recall that Tanith had a small ship cloaked on theplanet for an emergency getaway if needed, and that even once it was distroyed he was last seen running off into the desert...he could have very well had another small ship hidden, and made a hyperspace jump before the sun blew.