I really wasn't sure which forum to post this in...figure most people will see it here and it seems the most fitting..
So, Nightwing is rumored to be in Batman/Superman. It will be set with Dick and Bruce having had a falling out and no longer talking. This is reported by latino Review, the same peeps who were first to report Ben Affleck was in the running for Batman. Source.
There is also news that WB has been screen testing for wonder Woman, with Olga Kurylenko (bond girl from Quantam of Solace) in the lead. Source.
Have to say this is an interesting approach. Having a few characters in each film, instead of a separate film for each character.