Yes after he recovers from his injury.
To raw then gets traded to smackdown
Edge is coming back to WWE at the Royal Rumble 2010. I think he might be going to Raw because he is supposed to defeat Shamus at Wrestlemania.
Rey Mysterio is already a part of the WWE smackdown roster. He is currently in a feud with CM Punk and his straight edge society.
Jeff Hardy will come back in Smackdown at summer!!!!!!!
Yes he is coming back on September 4th on Smackdown
There have been some rumors that he is coming back at one-night stand.
He's most likely not coming back to Smackdown. Taker is in his mid 50s now and is probably about to retire. He may come back for another Wrestlemania, but that's about it probably
He's gonna be back on Smackdown on Friday. I don't know why or how. He'll fight and lose to Edge.
yes, edge is coming back to wwe just for one night to be the guest superstar.
He is coming back to WWE Royal Rumble 2011 and will be commentary on the Smackdown Team!
He's from Smackdown
Yes The Undertaker is coming back to the WWE returning on the Smackdown brand returning as the Phenom just like before he also might be returning to he Raw brand to compete against Batista and/ or Cm Punk whoever is the World Heavyweight Champion when he returns but if he returns to Smackdown he will probaly feudwith Triple H and/ or Edge probaly Edge for he was the one who (kayfabe) retired him . due to the recent turn of events undertaker will come back as the phenom but he will face Kane and paul bearer should return to support undertaker. I heared that undertaker is coming back but im not sure if he'll be on smackdown or raw but i know he's going to be mad at Kane and paul bearer is going to come back later on ,supporting undertaker.meanwhile Kane is going to turn his attension to edge