E3: Hands-on with the new Nintendo Wii U GamePad - Movies Games and Tech
E3 For Families: Nintendo's Wii U | WIRED
Nintendo's Changing the Media Game at E3 - Talking Point | Nintendo Life
E3 2011: Nintendo Wii U - All You Need to Know, Video and Photos Included
Nintendo 'Wii U' - E3 2011 Presentation - YouTube
E3: Nintendo Wii U concept trailer - YouTube
E3 2012]新コントローラ「Wii U GamePad」ほかWii U最新情報が続々公開。「Nintendo Direct Pre E3 2012」詳細レポート
Nintendo Announces The Wii U At E3 | TechCrunch
Wii U controller images leaked online ahead of E3 2012 | Technology News
Hands On the New Nintendo Wii U at E3 | WIRED
I've compared the prototype E3 gamepad against the retail version. Nintendo did make some changes after the E3 in 2011 when they exhibited the console. : r/wiiu
E3 2011: Nintendo Wii U Preview
We play Super Smash Bros. for Wii U【RN24@E3】 | SoraNews24 -Japan News-
The Nintendo Wii U Won E3 2011 | TechCrunch
File:Wii U controller E3 2011.png - Wikimedia Commons