On the official The Walking Dead Facebook page, AMC has debuted the first new walker for season four:
Somehow, it is a little anti-climactic. I mean, a zombie is a zombie, and this one doesn't have any stand-out traits like Little Girl Zombie, or Bicycle Zombie or Bloated Well Zombie. This guy could just be Background Zombie #4. It's a nice picture though.
The Walking Dead returns to AMC for season four this October.