Here is a summary of various rumours that were posted by bleedingcool
General:
FOX has been approached to allow the use of Batman (covered by the Gotham licence) in other shows.
John Wesley Shipp is in talks to be a regular across all DC TV Shows
Matt Ryan is also a possibility
Supergirl:
Kate Kane/Batwoman is coming to Supergirl in a recurring role.
Barbara Gordon/Oracle is coming to Supergirl
The friendship between the 3 is being based on the original Birds Of Prey with Batwoman taking Black Canary's spot.
The CW:
TVD is ending after this season.
The network wants Friday to be a 'Horror Night'
The network is looking to pair Supernatural with either a Constantine-led series or iZombie on Fridays
By Fall 2017, the network wants a DC TV show in the 8pm slot every weekday
