A new Justice League animated series is rumored to be in development at WB.
The above photo, said to be at WB Studios, reveals a new JLA poster on the far right featuring the silhouettes of the Justice League characters.
According to The Nerdist, the title of the planned JL series is "Justice League: Action" and may actually not appear on Cartoon Network, but on Boomerang.
The report mentions the Justice League animated series at Boomerang rumor is actually a couple of months old, and that network plans can always change.
It remains to be seen whether an official announcement will be made, but with the Justice League movie coming out in 2017, WB may want to capitalize on a new animated series as well.