E3 Insider, an official website of the Electronic Entertainment Expo, has put up a listing for Senran Kagura: Bon Appetit under the XSEED Games publisher page.
Earlier this year, Marvelous AQL released a Senran Kagura downloadable rhythm-cooking game spin-off for PS Vita called Dekamori Senran Kagura. This sounds like a localization.
The listing has since been removed, but its description listed it for a winter 2014 release. It read:
Senran Kagura Bon Appétit! is a rhythm spin-off of the ninja brawler series, Senran Kagura. Featuring cooking battles rather than shinobi showdowns, the emphasis is on outrageous humor and delicious food.