The Walking Dead - The Walking Dead: Season 2 - Episode 1: All That Remains
I assume that many of you noticed that there's Roman's body on the riverbank at the end of Episode 1, wearing the same leather jacket which he had in 400 Days.
I always assumed that he would have perished when the Gil's Pitstop was overrun, but apparently he survived and ended up into the woods. He died at the same place with the guy who attacked Christa, so maybe he was part of the same group.
Maybe it will mean that other 400 Days characters are nearby as well, although Roman got separated from Becca and Shel during the attack and he wasn't with them when Tavia arrived. However Tavia said her community is in north. Although I don't know how far it is and if Clem and Christa already went past it during those 16 months after they left Gil's Pitstop.
But there certainly are some interesting possibilities.