On March 25th, Castlevania: Lords of Shadow 2 will receive DLC titled "Revelations" for both Xbox 360 and Playstation 3. This will allow players to control Alucard, in a quest to learn more about Dracula and the storyline alongside it.
You'll be able to use "Glaciem" and "Igneas" powers, as well as transform into either a wolf or a bunch of bats, as well as turn back time. You also gain power as you defeat enemies, which comes along with the whole "vampire" thing.
No PC DLC has been announced.