BigBadToyStore.com has listed up for pre-order the McFarlane Toys Walking Dead TV series 2 figures. They have also posted some images for the wave which you can check out below. This wave includes the following:
Rick Grimes 2
Bicycle Girl Zombie 1
Bicycle Girl Zombie 2
Final released versions may differ from what is shown here. BigBadToyStore.com lists these with an October 2012 release date.