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 Wii U at E3 2011 editorial stock photo. Image of enjoy - 19890623
Nintendo Wii U Official Trailer E3 2011 - YouTube
Game News: Redesigned Wii U tablet controller may come with analog sticks, according to leaked photo | GameDynamo
Nintendo Wii U E3 2011 Hands-On Preview | GameGrin
E3 2011: Nintendo Announces Wii Successor "Wii U" | Nintendo Life
Nintendo E3 Presentation Summary
E3 2011: Nintendo Wii U First Take - CNET
Wii U: Nintendo unveils its new console at E3 2011 | E3 2011 | The Guardian
E3 2011: Nintendo Wii U - All You Need to Know, Video and Photos Included
Wii U Reveal E3 2011 LIVE REACTION! - YouTube
Nintendo Wii U at E3 2011 editorial image. Image of control - 19890645
E3 2011: Wii U tablet limited to one per console - GameSpot
File:E3 2011 - the new Wii U controller (Nintendo) (5822673694).jpg - Wikimedia Commons
Day 2 of E3 | Stu Station
![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
Speculation: Can the E3 2011 Zelda Tech Demo Still Run on the Wii U? - Zelda Dungeon
Take A Look At The New Wii U GamePad Controller - Siliconera
The Nintendo Wii U Won E3 2011 | TechCrunch
E3 2011: Detailed impressions of the Wii U controller | VentureBeat
E3 2011: Nintendo Wii U delights gamers, scares investors - CSMonitor.com
E3 2011: Nintendo Wii U Preview
RUMOR - Details on Nintendo's Wii U reveal at E3 2011 | N4G
Wii U E3 2011 | Gieson Cacho | Flickr
