At the very least this sounds like a more hands on move than Disney buying Marvel (I really doubt Disney will touch the Marvel publishing arm).This deal smacks of the WB movie division basically taking overseership of DC Comics. Warners is only interested in the merchandising/TV/movie rights (as they always have been) but it appears that instead of Levitz running the publishing-side without any interference, Nelson will be working hand in glove with the WB. I don't think smaller books/characters have anything to worry about it but in terms of DC's most iconic and marketable characters (Supes, Bats, WW) it means no big term character changes. The most obvious one being that even if Morrison/Didio hadn't already planned on Bruce Wayne returning this summer, I'm sure WB would have mandated he be back in the cowl by the time Nolan's next film comes out. Stuff like that. But if it gets more DC characters into TV/film/animation I'm all for it.
By the way, is that a variant cover for the most recent Supergirl volume? I really like the art. Actually looks 50s-ish but obviously not (with the midriff and all). Anyone know the artist?