It's been revealed Coco Adel will be voiced by Shizuka Itou for the Japanese dub of RWBY. Also, Itou also voiced another character also named "KoKo" from Jormungand.
Anywhere I could find the japanese dub online right now?
I watched it on Youtube (not just the fandub, but the official Jap dub). It has no subs, though, but if you've already watched the original dub, you should have no problem understanding what's going on.
Its pretty good but the ending is pretty crappy due to inconsistencies. Won't spoil anything but it's something you should be prepared for. Season 1 Koko and Season 2 Koko are like two entirely different people.
Oops, didn't realize you were talking about RWBY not Jormungand.