Yeah I've just watched the trailer.
It's basically the e3 trailer but with this scene on the end.
It's past dracula meeting "Victor" Belmont, who claims he's the last Belmont before charging at Dracula.
So that's it, the new Belmont is past-based and originally from the cancelled Castlevania Resurrection.
For his design, Victor is wearing a hooded white shirt with a green sleeveless jacket, a gauntlet on his left arm and a pair of armoured boots/greaves (Like alucard's) and he's using a combat cross. He also looks around Simon's age.
EDIT: Trailer below.