Hmm, it's not on his imdb page yet, but I think it's interesting that they went with a voice actor rather for Goon but a fairly well known actor for Frankie. I'm glad this thing seems to be rolling along though.
Article from March, Powell says that they're basically waiting on Fincher to finish his movie The Social Network before things can get really moving (imdb says that The Social Network was post production in March, so hopefully we'll start seeing some more Goon material in a few months) .