@kingrex32 thank you for your interest in zombiu. The team is working hard on a prototype. it´s too soon to tell you more.
— Jean-Philippe Caro (@Bignozjip) May 11, 2013
Prototyping does not mean that the game is actually in development - it may not have been green-lit yet by Ubisoft. But given that the Montpelier studio is only just finished with Rayman Legends, it's unlikely to be very far along with a new project.
ZombiU proved critically divisive when it launched alongside the Wii U last year - IGN's review gave it a 6.3, but other critics fell in love with its harsh, almost Dark Souls-y survival horror. Its Metacritic aggregate score currently sits at 77. Keza MacDonald is in charge of IGN's games coverage in the UK. You can follow her on IGN and Twitter.