RUMOR - Retro has another project in the works that might be cancelled

I guess it's Retro rumor day, boys and girls. First we heard that Retro is working on StarFox : Grand Prix, and now we're hearing they have a second project in the works as well. According to multiple sources reporting to Kotaku, Retro has been toiling away on a game separate from the StarFox title, but this one has had quite a troubled development. At this point, it appears the project might have even been cancelled.

Game Informer chimes in on the matter as well, saying they've heard the same discussion, but didn't know if the troubles were related to StarFox: Grand Prix or something else. According to them, both Retro and Nintendo were growing frustrated with the state of this other project, and it could be canned.