Some time ago, Konami decided to release Castlevania: Rondo of Blood in the West -the game is available in the Virtual Console and as a remake for PlayStation Portable-, and now it appears that they are planning to release Castlevania: Dracula X also on the Virtual Console. All according to the Australia’s Classification Board, that has rated the game with Nintendo listed as publisher.
Basically, Castlevania: Dracula X is a port of Castlevania: Rondo of Blood (that was only released in Japan for TurboGrafx-16 console) for Super Nintendo console. The main differences between the two games is that the SNES version has different levels and music and, besides, only Ritcher Belmont is playable.
Thanks, Siliconera