Well for the last year the fake, lazy title I've made up in my head was:
Man of Steel [or Superman]: Dawn of the Knight
So it's nice to see they waited this long to do announce something that resembles a half-hearted 15-second brainstorm I did.
But I realized that any "Dawn" wouldn't really make sense since they're already established. (They disagreed!) But really I just assumed all the promo material would just show the big S logo, and then when the subtitle came up, they'd have the bat wings come prominently into focus.
I guess the only slightly interesting thing about it is that it implies that Batman is central enough to have his name come first.