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
The Nintendo Wii U Won E3 2011 | TechCrunch
Take A Look At The New Wii U GamePad Controller - Siliconera
E3 2011: Nintendo Wii U delights gamers, scares investors - CSMonitor.com
E3 2011: Nintendo Wii U First Take - CNET
E3 2011: Nintendo Press Conference Recap | Skatter
E3 2011: Nintendo Wii U Preview
Hands On the New Nintendo Wii U at E3 | WIRED
Nintendo Wii U at E3 2011 editorial stock photo. Image of enjoy - 19890623
File:E3 2011 - the new Wii U controller (Nintendo) (5822673694).jpg - Wikimedia Commons
E3 2011: Nintendo Announces Wii Successor "Wii U" | Nintendo Life
Wii U: Nintendo unveils its new console at E3 2011 | E3 2011 | The Guardian
Nintendo E3 Presentation Summary
E3 2011: The Wii U Controller Needs Analog Sticks and Triggers - IGN
E3 2011: Nintendo Wii U Preview
File:Wii U controller E3 2011.png - Wikimedia Commons
Day 2 of E3 | Stu Station
E3 2011: Detailed impressions of the Wii U controller | VentureBeat
Wii U Reveal E3 2011 LIVE REACTION! - YouTube
E3 2011: Wii U tablet limited to one per console - GameSpot
E3 2011: Nintendo Wii U Preview
The new Nintendo Wii U controller is pictured during the Electronic Entertainment Expo, or E3, in Los Angeles June 7, 2011. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT BUSINESS SOCIETY Stock Photo - Alamy
