I have a strong feeling that if this "It Begins" business is indeed Jericho returning, he's secretly on the "Legends" DLC pack that's due out in January
No, no he isn't. THQ would#ve announced him with the others. Foley, Savage, Batista and Clay are the final pack and that will be the lot. By January they'll be hyping the shit out of WWE Brawl, ready for its release.