Spring 2014 has gotten shortened to May.
http://www.nintendoworldreport.com/news/36433
Mario Kart 8 is coming out in May 2014 across the world, according to Nintendo President Satoru Iwata.
Previously listed as a spring 2014 release since its announcement at last E3, more information about Mario Kart 8 will be revealed in upcoming Nintendo Direct presentations.
What do you mean only Smash? There are several other games that we know of that could fall in there, like X and Yarn Yoshi.
Yarn Yoshi could literally be released any time. It's the least complicated game Nintendo has slated for release this year.
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Hyrule Warriors is apparently set for 2014, but it looked so early. If anything gets pushed back, I would think it's that game.
1) We have seen exactly nothing of Yarn Yoshi since last year, and it has an approximate release date of "I don't f**king know". For all we know, they rebooted it into a 3D platformer in the vein of Sly Cooper 1.While true, that could be said of just about any game if you're basing this off of absence and a lack of a set release date. This includes Hyrule Warriors which you're pretty convinced is coming out this year.