I don't know why you people are bitching, at least we have a very ipressive origin story, it's not that dracula was the most deep villain ever so it's fine this new direction. About the Belmonts, let's not speculate 'til we get the actual TOLD story, I'm sure Mr Alvarez Won't let this saga full of plot holes like some afro-crappy-japanese out there, stay cool

---
And I also don't understand why are you saying "this is not CV! where's my Castlevania!"
Know why? Because almost nothing that makes castlevania a Castlevania EXISTS yet in this story, there's no Death (It's not created yet with Necromancer's powers) no Castle (the real one you know, because Gabriel ends being GOOD we don't know how the transformation occurs and what he does to build his dark fortress). I mean, ther's nothing yet, and that's GOOD, because for the first time ever DRACULA IS ACTUALLY POWERFUL and he CAN do things, unique to thim, do you understand my point? I mean, if the "CV staples" were there in LOS that means Dracula's powers are just a rehash of the powers of the old lords, the abscence of this is the first proof oof Drac's power in ALL Cv timeline, he created a LOT of dark by himself, and that's something (I always hated how Celia could build and Exact castlevania replica with bosses and all, I mean, really? if she can do that, why does she need Drcula? damn...).
And for you asking how does this fit in the timeline, it seems that final's scene is modern times, or near modern, so it's perhaps 1999; Zobek tells him that if he stops Satan he would let him free of inmortality, we know that Dracula is killed in 1999 for the first time ever so that's maybe because of Zobek's promise, oh, and also the wars are called the Demon castle Wars, not the Dracula's Castle wars (yeah, I know about the whole Akumajou Dracula thing but I'm sure this is not unrelated). And Demon=Satan, And we don't know the exact facts of that battle so many things could be said.
It makes sense to me, however I think konami won't make the 1999 game right away, because this is a reboot in one way or another, I think they will "re-tell" some of the old games (LOI, CVIII, SOTN?) but not in the tradiitonal way obviously, and this time in chronological order so "new fans" won't get lost.