The posters include seven of the studio's 14 panels at this week's Comic-Con event in San Diego.
The Big Bang Theory, Supernatural and The Vampire Diaries are among its returning shows.
Former Lost star Terry O'Quinn features in the first poster for ABC's 666 Avenue, which will appear at Comic-Con on Friday.
The CW's upcoming adaptation of DC Comics' Arrow also receives a new poster ahead of its Friday panel.
There are also posters for Kevin Bacon's The Following and the third season of The CW's Nikita.
In pictures - Warner Bros' upcoming 2012/13 TV show posters (from The Hollywood Reporter):