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 reveals new Wii U details ahead of E3 | Ars Technica
Check Out This Early Wii U GamePad Prototype - IGN
Check Out This Early Wii U GamePad Prototype - IGN
Nintendo WII U GAMEPAD CONTROLLER ONLY WUP-010 white Black japan Please Read | eBay
Rejected Wii prototype controller had touchscreen similar to Wii U GamePad | N4G
E3 2012: Meet The Wii U GamePad | Nintendo Life
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
Wii U, the new Nintendo console, reinvents the controller - CSMonitor.com
Twitter 上的Nintendo4Life87："This is a very rare WiiU prototype gamepad (DK2-E3-CD(W)) that was demonstrated at the E3 in 2011 to reveal the new console. https://t.co/bRrFuK0YXb" / Twitter
/cdn.vox-cdn.com/uploads/chorus_asset/file/10936593/new-wii-u-gamepad-official-verge.0.jpg "Nintendo at E3: Wii U, Pro Controller, 'Miiverse' online services, and new games - The Verge")
Nintendo at E3: Wii U, Pro Controller, 'Miiverse' online services, and new games - The Verge
Up close with the Nintendo Wii U (videos and pictures) | VentureBeat
Close-Up Look at the Wii U Controller (E3 2011) - YouTube
Nintendo reveals Wii U GamePad prototypes - GameSpot
Nintendo unveils the Wii U system - CNN.com
Check Out This Wii U GamePad-Like Controller For Other Consoles - My Nintendo News
Wii U GamePad prototype unleashed by Nintendo
Designing the New Nintendo Wii U Gamepad - 3D Printing Industry
Nintendo's Wii U GamePad prototype revealed: Two Wii remotes, a display and some tape | Engadget
Wii U GamePad - Wikipedia
