Nintendo is having a Wii U Event this September 13 from 10am to 4pm, yep that's 6 hours of Wii U goodness. Reggie, President of NOA, will be doing a press conference, it should just pertain to mostly or only to North America.  They should be unveiling release date, price, color(s), launch games and who knows maybe a few surprises.After the conference they'll most likely be some hands on the launch games and maybe a few afterwards.

No word yet on anything pertaining to Europe or Japan of something similar

NintendoEnthusiast