...first quarter.
Oh, and if anyone's wondering, only Luigi and Bass will be actual new characters. The rest of them (Proto Man, Trevor Belmont, Dark Link, Dark Samus, Haggle Man, Demon) will be cosmetic skins of the previous characters.
Edit:
Okay everyone, Jay decided it'll be fine to release the list, so here is the list of all the skin included in the game right now, I spoiler-ed it cause its kinda long and some people might wanna wait and be surprised. This should be all the skins that will be in the update. It'd probably be best to wait and surprise you guys with whats in, but I'd rather give you the option to check so you don't end up making something that's already in.The list is kind of an actual spoiler for the update, some people want to wait and be surprised so please try not to talk about the skins that weren't already announced in the trailer or anything until the update it out. This list is mainly just a reference for skin creators. :)(click to show/hide)
I'm still not sure what Ninja Gaiden game HaggleMan is from, or who Demon (a skin for Mario) even is."Robot Ninja Haggle Man (http://www.youtube.com/watch?v=D2MHKUPugKY)" from Retro Game Challenge/Game Center CX: Arino's Challenge on the Nintendo DS. His game is a bit like Mr. Goemon meet Mappy, actually...