Frosty Chaotix is currently working on a Nintendo DS remake of Castlevania 1 from the old Nintendo Entertainment System.

The game itself is in early stages and “borrows” a lot from the original Castlevania games, along with the name.

http://palib.info/forum/modules/newbb/viewtopic.php?viewmode=flat&type=&topic_id=4216&forum=9