Honestly, if their 2015 releases the games that they actually are promising, I'd honestly not be upset waiting until 2015 for Metroid.

Have to wonder who's handling it, though.

Honestly, I didn't find Other M to be as bad as people say it is. It's one of the only games i've ever pre-ordered.

That being said, it's not the best Metroid game. Maybe Nintendo decided to give the franchise a break, so people could start to crave it again. I mean, it's working, isn't it? Up until 2012, I rarely saw anyone talking about Metroid.

Other M flopped hardcore vs Nintendo expectations.

I haven't played the game but the turn that this game took was quite dramatic. 6 month pre release it was universally acclaimed like the next big hit without any hesitations, all the previews were very positive and the expectations was quite high.

At the release however, the reviews became poor, the players rejected the game and it ended as a massive disappointment for Nintendo sales wise.

What was the reboot of Metroid with its new style ended in a fiasco and we still haven't heard about the licence since.

Nintendo, don't listen to OP! Give us a new F-Zero instead!!!!

if you dont hear about it at E3 2015, then its not coming to Wii U

Believe me, I feel your pain being as Metroid is my favorite Nintendo series.

It is not a very big seller. It is a good franchise but it isn't one that will increase sells so Nintendo is focusing on games that will (Super Mario, Smash and even Zelda).

Nintendo has always focused on Mario, Smash and Zelda and yet they were still able to produce good quality Metroid games. Besides, Super Mario 3D World barely pushed the sales of the Wii U and Smash doesn't seem to do much either considering we're in the Holiday period. 

Personally I think Zelda and Metroid are very similar games, only Metroid is far better. Better story, better graphics, better puzzles (that aren't re-used over and over again), better bosses, better item upgrades and better use of said items in the overworld (in Zelda you only use a certain item in a specific dungeon, after that it's practically useless). It's surprising that Zelda is so much more popular than Metroid. 

I guess Nintendo just didn't care as much for Metroid given the fact that the maker of the franchise left Nintendo (and died shortly after).