Some of the DLC should be announced today, but in the mean time, this video shows some DLC spoilers.
Also, there's a rumor floating around based on the thq page for the game that these might be the dlc wrestlers.
Shawn Michaels
"Macho Man" Randy Savage
Batista
Brodus Clay
Mick Foley
Jim Ross
Michael Cole
Kharma
Trish Stratus
Alicia Fox
Brie Bella
Nikki Bella
Vickie Guerrero
Whether or not that list is legit, we'll see, but it does have a couple of the leaks above.
Also, I'm psyched for some of those alts, and can't wait to see more, IF it's true.