User blog comment:Jimeee/PS3 release dates for Dragonborn, Hearthfire and Dawnguard - Euro Update/@comment-80.212.152.180-20130205183131/@comment-5046408-20130205183928

Eh...that's quite unnecessary and a very one-sided DLC. Namely due to the fact that Skyrim already HAS a full-on Dark Brotherhood Questline with radiant quests, the fact that there's an alternate quest to DESTROY the Dark Brotherhood, and the simple fact that a whole DLC devoted to the Dark Brotherhood would be INCREDIBLY one-sided and only applicable to "evil" oriented characters.

I'm pretty sure Bethesda learned their lessons about that sort of thing from Oblivion's micro-DLCs XD