Another thing to add to my dislike list. Tyresse, Sasha and freaking Beth were made series regulars for S4. Melissa McBride and Scott Wilson were not upgraded. If Hershel or Carol get killed off, I'm out.
http://tvline.com/2013/04/03/the-wal...ries-regulars/
ETA: Melissa McBride tweeted that she is a series regular but I've never seen an announcement form S2 or S3 about that and I have no idea why neither she nor Scott Wilson are in the main credits but only show up as "also staring"