According to game creator Tomonobu Itagaki, Devil's Third was confirmed to be an exclusive title for the Wii U during IGN's E3 stream.
Itagaki teased the announcement of the game earlier this year. Not much is known about the game except for the promotional photo we have above and the Wii U exclusivity. The title was originally a multiplatform title when it was still being published by THQ, but Nintendo swooped it up after the former went bankrupt.
There's still no release date specified for the game at this moment.