Due to the large amount of series regulars who met their end in The Walking Dead season 3 finale, it's hard to say that a promotion to series regular means much in terms of career stability. However, Chad Coleman, Sonequa Martin-Green, and Emily Kinney (aka Tyreese, Sasha, and Beth) are - at least - assured a bit more screen time in the coming season.
The three new series regulars join fellow alum David Morrisey, who will reprise his role as The Governor in season 4. Melissa Ponzio (aka Karen) will also pop up as a recurring character.
A part of the show since the eighth episode of season three - "Made to Suffer" - Tyreese played a small but sometimes valuable role on the series, towing the line between believing the Governor and fearing him. With his new status as a regular, Tyreese's role will grow - but will he rise to the level of prominence that the character had in the comics?
At this point, it's very hard to put much much stock in the role of a character or the direction of a story arc with relation to how they are in the comic books, but Tyreese is one of the more important characters in that realm, so one has to wonder if there will be a parallel here and if he will take on a leadership role. Beth and Sasha are characters that are exclusive to the show, so we have no hints (be they useless or useful) with regard to how they fit in.
For the Governor (David Morrisey), I suppose we can expect more of the same bloodlust and madness; though, without his flock (thanks to, you know, him killing a lot of them in the season three finale), we have to wonder how much havoc he can bring about. Regardless, producers and new showrunner Scott Gimple clearly have plans for him.
What plans producers have for Karen (actress Melissa Ponzio) is another question. The lone survivor of the Governor's attack on his people, Karen led Rick, Michonne, and Darryl back to Woodbury and then joined the large group of refugee's that were brought back to the prison. Will she rise up and help her fellow townsfolk acclimate? What about those Woodbury residents? Is it possible that we'll see a few more cast additions and some familiar faces and names before the show starts filming in May?
Anything is possible, and we'll keep an eye out for any and all casting announcements, but for now we -- at least -- know that a few familiar faces will be back on The Walking Dead this fall... at least until they also get killed off.
The Walking Dead season 4 premieres in October.
Source: The Hollywood Reporter