Announced yesterday were some billing changes for Season 4 that I think are really good ones.
Chad Coleman (who plays Tyreese), Sonequa Martin-Green (Sasha), and Emily Kinney (Beth) are being promoted to series regulars, while Melissa Ponzio (Karen—the woman whom the Governor did NOT kill in the field who subsequently helped Rick not get shot by Tyreese) will be a recurring guest star.
I’m really looking forward to seeing more of all of these characters and actors. Tyreese! Hammer time!