Watch The Walking Dead Season 9 Trailer

The Walking Dead's full Season 9 trailer dropped during its San Diego Comic-Con panel on Friday.

The trailer starts with short-haired, big-bearded Rick Grimes (Andrew Lincoln) talking to Negan (Jeffrey Dean Morgan) in his prison cell about how they're living now, not just surviving.

Elsewhere, long-haired Maggie (Lauren Cohan) and Daryl (Norman Reedus) are walking together, perhaps discussing their plan to assassinate Negan . In voiceover, Negan -- who was imprisoned in the Season 8 finale -- says "you think you've got all this on lock," which of course means whoever he's talking to certainly does not have it all on lock.

Then, Michonne (Danai Gurira) tells Maggie that they need to lay down some rules about how the communities treat each other, and what happens when one community doesn't show another the proper respect. Then there's a quick cut to Daryl punching some unidentifiable long-haired man in the face. Looks like the peace in the communities that was found at the end of Season 8 will be short-lived.

Get All the Latest News From San Diego Comic-Con 2018

But wait, there's more! There's a big, big tease hidden in plain sight in the clip. When Michonne is talking about the communities, there's a shot of a pole with directional arrows pointing toward the known communities. One of those arrows is marked "Toledo." This is clearly a reference to the Commonwealth, a community in the comics that has not been seen on the show yet. It's a more advanced society with a large population, a standing army and time for arts and leisure. And its capital is in Ohio. In Season 9 we might find out that Georgie (Jayne Atkinson), who first appeared in Season 8, is from there. Or maybe the mysterious helicopter that Jadis/Anne (Pollyanna McIntosh) was in contact with, which we see in the trailer. Or maybe both!

Elsewhere, there's a brewing civil war between those who were Saviors and those who were not, Father Gabriel (Seth Gilliam) has one good eye, and we see some new characters -- but not Alpha or the Whisperers, who it was announced during the panel would be appearing in Season 9, with Samantha Morton playing the leader of the weird skin suit-wearing villains.

The Walking Dead Season 9 premieres Sunday, Oct. 7 at 9/8c on AMC.