It has been speculated for a while that an updated version of ZombiU, one of the Wii U’s launch titles, will be coming to PS4 and Xbox One. Now there seems to be even more evidence of this happening. ZombiU has been rated for PS4 in Taiwan and also on Xbox One in Australia. Trusted rumor-source Unseen64 already stated that this updated version of the title was coming, and it seems likely that this is true.
To differentiate it from the original Wii U version, the game is now simply titled “Zombi”. Ubisoft didn’t make a profit off of the Wii U original, so it seems like they want to release again towards larger audiences to make up for the loss.
This is still a rumor, though, so take it with a grain of salt. Maybe Ubisoft will make an official announcement soon.