And Tenpenny wont be back for two reasons.
1) He's from the GTA III era. R* have said multiple times that the GTA III era is dead. You'll never see CJ, Tenpenny, Claude, Tommy, Rosenburg, El Buro, 8-Ball etc again.
2) San Andreas Spoiler?:
Didn't he die in San Andreas? I never finished it but I'm sure I heard he's killed at some point.