Sorry if my opinion is not the same of some part of users here, but Im really expecting a castlevania game like the ones that came before LOS.
What do you mean "ones before LOS"? "Metroidvanias"? Classic'vanias? "3D IGA'vanias"? There were a LOT before LOS, after all.
And I'm afraid it will not happen either way. Not after success of LOS and most likely success of LOS2. The only way I see 2D CV returning, is some some small scale tribute project akin to MegaMan 9 and 10. Or downloadable title for the networks, that will not be big as regular DS "metroidvania" anyway and mostly will be intermediate project between "big 3D titles". Konami want to have it big with Castlevania and in their mind (not that I disagree) 3D is the way to hit jackpot with gaming audience.
And the old timeline is already discarded (save for Pachislots that doesn't count for anything significant) or at least was put on indefinite hold - LOS existence is a prove of it. It is always a possibility that Konami will return to it for some reason, but after LOS, it will be much easier to create games in "blank state" universe rather then uphold multiple conventions and timeline hijinks of the previously established continuities. And no, nobody will care about "old fans", when corporation can make more money on the general public.