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
We play Super Smash Bros. for Wii U【RN24@E3】 | SoraNews24 -Japan News-
Nintendo E3 Presentation Summary
Final Wii U Form to Be Shown At E3 2012 | Nintendo Life
Wii U at E3 2012: first hands-on | Wii U | The Guardian
/cdn.vox-cdn.com/uploads/chorus_asset/file/13908012/wii-u-main-hero-rm-verge-1020.1419964757.jpg "Nintendo Wii U controller will include near-field communication - The Verge")
Nintendo Wii U controller will include near-field communication - The Verge
E3 2012: Wii U's "GamePad" Revealed - IGN
E3 2012 - The Grand Prize: A Nintendo Wii U | Attack of the Fanboy
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
Nintendo Announces The Wii U At E3 | TechCrunch
Nintendo Wii U console shown off in its bright, minimalistic entirety | Engadget
![Nintendo Kicks Off E3 With Wii U GamePad and More [#E32012] – G Style Magazine](https://149359733.v2.pressablecdn.com/wp-content/uploads/2012/06/Wii-U-GamePad1.jpg "Nintendo Kicks Off E3 With Wii U GamePad and More [#E32012] – G Style Magazine")
Nintendo Kicks Off E3 With Wii U GamePad and More [#E32012] – G Style Magazine
Nintendo reveals new Wii U details ahead of E3 | Ars Technica
/cdn.vox-cdn.com/uploads/chorus_image/image/6989023/screen_shot_2013-01-23_at_8.46.01_am.0.png "New 3D Mario, Mario Kart, Wii Party titles in development for Wii U, will be shown off at E3 2013 - Polygon")
New 3D Mario, Mario Kart, Wii Party titles in development for Wii U, will be shown off at E3 2013 - Polygon
Wii U: Nintendo unveils its new console at E3 2011 | E3 2011 | The Guardian
E3 2012: Wii U's "GamePad" Revealed - IGN
File:Wii U controller E3 2011.png - Wikimedia Commons
E3 Split Prediction: Nintendo Will (Or Won't) Rebrand The Wii U - Game Informer
E3 2011: Nintendo Wii U Preview
E3 2014: Shigeru Miyamoto Confirms Star Fox for Wii U | Nintendo Life
A quick walk through Nintendo's E3 2013 Wii U lineup | Engadget
Wii U E3 2012 Infographic - My Nintendo News
![Nintendo Wii U Hands-On At E3 2011 [Video] - SlashGear](https://www.slashgear.com/img/gallery/nintendo-wii-u-hands-on-at-e3-2011/intro-import.jpg "Nintendo Wii U Hands-On At E3 2011 [Video] - SlashGear")
Nintendo Wii U Hands-On At E3 2011 [Video] - SlashGear
Nintendo Downplays “Groundless” Rumors Of New Wii U Announcement At E3 - My Nintendo News
E3: Nintendo Wii U concept trailer - YouTube
