Minecraft Story Mode is coming to the Wii U. There is currently no release date for the game.
Here is what Job Stauffer from Telltale Games (developer of the game) said about Minecraft Story Mode recently (via Go Nintendo):
” More episodes will roll out quickly. Typically, they will come every six-to-eight weeks. Episode 2 is following before thanks giving currently. We could have multiple episodes out by Christmas this year. We should also have a date for download on Wii U, the first Telltale title on the platform.”