From
Catwoman #49 (April 2016), towards the tail-end of the
New52/
DCYou run
(and during the stretch when Jim Gordon was robo-bunny-Batman and Bruce didn't remember having been Batman),
Not a definite confirmation that Selina knew Bruce was Batman, but it would seem to imply it. (Otherwise, why contact
Bruce Wayne for help to deal with The Penguin and others involved in all this? Had there been any serious reference to a Bruce & Selina relationship during the
New52 where she
wasn't aware of his dual-identity?)