Wii U will be released in the United States on November 18, and one week later in Japan, according to reports.
The claim comes from Wii U Daily, which cites an internal email circulated to staff of Media Land, a videogame retailer in Tokyo's Akihabara district. While unconfirmed, a November 18 release date would make sense given that Wii U's predecessor was released on November 19, 2006 - both Sundays. The email in question made no mention of a European release date.
Nintendo is expected to reveal the system's release date, and show off final hardware, at E3 in June.