The game itself is a fresh start as a new IP, but just about every Castlevania fan who experienced Symphony of the Night in the late 90s or early aughts when it was relatively new wants to recreate that experience on a modern console, and Bloodstained may very well be that opportunity.
Source: N4G PC E3 2018: Bloodstained: Ritual of the Night Harkens Back to a More Symphonic Night | Hardcore Gamer