A GameStop employee suggests the video game accessory manufacturer provided the information during GameStop's Fall retail conference.
Rumors of a November 18th Wii U launch date swirled today, when a NeoGAF forum thread was posted revealing a potential leak by Performance Designed Products (PDP). Apparently, at GameStop's annual Fall conference, the accessory-maker revealed it was launching various Wii U accessories on Sunday, November 18th, which lines up with Nintendo's previous holiday hardware release timelines. Similarly, another source has informed Kotaku of a PDP representative suggesting their "peripherals would be available just ahead of the Wii U's November 18 release date."