They've left the Wii U to die.

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Let's see:

Games announced before E3 2014 that were released after the event:

Hyrule Warriors (announced December 2013)

Bayonetta 2 (announced September 2012)

Super Smash Bros for Wii U (announced January 2013/E3 2013)

 

Games announced at E3 2014 that were released after the event:

Captain Toad Treasure Tracker (December 2014)

Kirby an the Rainbow Curse (Februay 2015)

Mario Party 10 (March 2015)

 

Now, the interesting part. Games announced before E3 2014 that have not released yet:

Xenoblade Chronicles X (announced January 2013, 2015 overseas, April 29th in Japan)

Yoshi Whoolly World (announced January 2013, 2015 first half)

Shin Megami Tensei x Fire Emblem (announce January 2015, TBD)

 

Games announced at E3 2014 that are not released yet:

Splatoon (May 2015)

Mario Maker (2015)

Star Fox (2015, before Zelda)

Project Giant Robot (2015)

Project Guard (2015)

The Legend of Zelda (TBD)