Allegedly, an "employee" from a GameStop store in the US have taken photographs of
Wii U Promotional Materials to be displayed in-store. The pictures were
exclusively leaked onto a gaming site called
sidequesting.com .
It is now apparent that
Nintendo are sending out promotional materials to retailers as well as online stores. These were verified when local stores were enquired about it. Though no other significant details were uncovered such as released dates and pricing for the console at this stage.
Nintendo Wii U Marketing materials pictures taken by an employee: