Woah.

Reddit comments:

https://reddit.com/r/videos/comments/3cu3xj/walking_dead_season_6_trailer/

https://reddit.com/r/thewalkingdead/comments/3ctx7d/the_walking_dead_season_6_premiere_will_be_90/

https://reddit.com/r/thewalkingdead/comments/3ctxx9/the_wolves_will_be_a_part_of_season_6_in_a_way/

https://reddit.com/r/thewalkingdead/comments/3cu2zc/s6_trailer_is_this_who_i_think_it_is/

https://reddit.com/r/thewalkingdead/comments/3ctxdb/comic_con_trailer_the_walking_dead_season_6/

Walking Dead season 6 trailer breakdown: http://imgur.com/a/wBPXR

Reddit comments:

https://reddit.com/r/thewalkingdead/comments/3cv2qb/comic_spoilers_includedthe_walking_dead_season_6/

Reddit comments:

https://reddit.com/r/thewalkingdead/comments/3cukby/my_favorite_catch_from_the_new_trailer/

Comic Con also showed Fear the Walking Dead:

Reddit comments:

https://reddit.com/r/thewalkingdead/comments/3cu7p3/official_comic_con_trailer_fear_the_walking_dead/

Compare with the 2010 Comic Con airing the first Walking Dead trailer:

"The Walking Dead spinoff Fear the Walking Dead is going to look at how different family units operate at the beginning of the zombie apocalypse, and one of those families will feature a Salvadorian immigrant and his first-generation American daughter, examining the American dream in the Walking Dead world."

Source: http://io9.com/how-fear-the-walking-dead-will-explore-the-american-imm-1717256270