We don't know,maybe he'll die in the intro movie like Liu did.

he could be a super secret charecter. they need him in it so scorpion can kill him

I think it would be good to have Quan Chi playable in MK:Deception. I still want to see his living weapon and how it will play out.

It depends on the Epilouge of MK:DA that will determine if Quan Chi returns in this game. However, Scorpion is still around so that must mean that Quan Chi is still alive and is in one of the realms exept for the Netherealm.

I hope Quan Chi comes back so he can kick the crap out of Scorpion. He is my favorite character.

Apparently Ed Boon wanted to add an extra returning character to MKD, and he was thinking about including Jax... I hope that he will change his mind and put Quan Chi instead he is a far cooler character. He just need a few more moves(like his weapon stealer) and maybe his living weapon that he had in the concept sketch.