When Shigeru Miyamoto confirmed that the Wii U would be getting a new Star Fox, he stated that Nintendo was seeking a partner to aid development.
Miyamoto has now confirmed via Nintendo's ongoing Treehouse Live segment that Star Fox Zero - for that is its name - is being co-developed by PlatinumGames. Platinum's potential involvement with the franchise has been heavily rumoured for quite some time - ever since Hideki Kamiya expressed an interest in working on the series, in fact.
Sadly for Kamiya, he hasn't gotten his wish - he's not working on the game. Instead, the director is Yusuke Hashimoto, who oversaw Bayonetta 2.
Nintendo is running another Treehouse broadcast later today which focuses more on Star Fox Zero.