It appears the rumors were true, Rosita will indeed be making an appearance this season of the Walking Dead, played by actress Christian Serratos. Christian's contract has her placed as a recurring with an option to become a regular in Season 5.
If they would even consider adding Rosita to the main cast, I'd say atleast two-three regulars will be getting killed off this season. It's also very likely Abraham will become a regular next season as well.
It's also very likely we will be getting a casting update on the other members of her group shortly. (Abraham?) (Eugene?)
Who would you guys like to see cast as Abraham and Eugene? Personally I dont care about Eugene but I'd like to see somebody say Thomas Jane wouldn't make a damn good Abe..