Update: American version has been announced as well.
Update: Nintendo of America has announced that the presentation will also happen in their region. Wii U Direct will start at 06:00 PT/09:00 ET and it can be followed right here!
NCL and NoE have announced that a brand new Nintendo Direct, which will be all about upcoming games and services for Wii U, will broadcast tomorrow.
Officially titled Wii U Direct Nintendo Games, the presentation will be lead by Nintendo president Satoru Iwata in both regions. Also of note is that the presentations will be at the exact same time. Japanese gamers can tune in at 23:00 JST on this site, while European users can tune in here at 14:00 GMT/15:00 CET.