On July 7th & 8th AMC is going to, as I understand it, recap season 2 and show previews of season 3.

On the tv ad they announce they will show the first episode in black & white. It wasn't in black & white when it first aired was it? I don't know if that means they'll show both seasons 1 & 2 or not.
From what I understand, they also will have the "Talking Dead" group with various stars/guests.
TIS
http://www.amctv.com/shows/the-walking-dead