There's hardly been a peep said about Game Zero for a long time. The clsoest thing is a seemingly random background for their
website. It's not much, but logically their background should be something about
Funkydilla, Zoonami's announced game.
They haven't updated their website for a long time, so I wouldn't hold out for an update. When the website was still up, they had a section about dismissing rumours regarding Game Zero. They said it wasn't a racing game or a Goldeneye/Perfect Dark clone, but nothing else.