This news has been hinted at for a number of months now, as I recall. When I inevitably get a Wii U, I will be picking up Dracula X (SNES). I own the original cart, but it's consistently in my top 3 favorite games in the series. In fact, it's one of the titles that solidified me as more than a casual fan of Castlevania. It's a fun pick-up-and-play title with its arcade feel, sweet soundtrack, painterly visuals, and unique challenges. (The knock of it not being a 1-to-1 port of Rondo has really given it an unfair reputation over the years. I'm very happy to see it get this release, as it's one of those games I always want available to play.)
I really hope Bloodlines comes next, as I have never had great access to that title to fully enjoy it.