According to The Hollywood Reporter, Dan DiDio is no longer Co-Publisher at DC Comics. DiDio has been a Co-Publisher at DC Comics since 2010, and was the man who spearheaded 2012's controversial line-wide relaunch, The New 52. He followed the New 52 with a soft-launch of DCYou, and was rumored to be in the process of relaunching the line in the coming months with 5G (or Generation 5).
There is currently no official statement on whether the departure was DiDio's choice, or if DC Comics forced him out. Additional details will be provided once they are made public.