This is a pretty weird rumor, but perhaps the same could be said of all rumors. Apparently, Konami USA's Shinji Hirano made a reference to new Castlevania games on the Wii and DS during a press conference Tuesday in Sao Paulo. The weird part is that the event in question, according to Arena Turbo, was a launch for Grand Theft Auto IV and Iron Man. Is GTA IV even out in Brazil? Xbox.com says it isn't. And why would a Konami executive even be there making statements? So sketchy. Of course we can't find any reference to this event anywhere but this post and this GameTV post.
But we've heard Wii 'Vania rumors before, and this extremely dubious one doesn't make the game any less likely. Maybe it'll get sorted out next week, as Hirano reportedly said.