Ok, let me compare a few examples
Super Mario 3D World - Officially revealed in June 2013. Released in November 2013
Wind Waker HD - Announced Jan 2013, officially showcased for the first time in June 2013. Released in October 2013
Donkey Kong Country - Announced in June 2013. Released in February 2014
Mario Kart 8 - Officially revealed in June 2013. Released in May 2014
Pokémon X & Y - Revealed in January 2013. Released in October 2013
Zelda: A Link Between Worlds - Revealed in April 2013. Released in November 2013.
NES Remix - Revealed in December 2013. Released 5 minutes later.
Dr. Luigi - Revealed in December 2013. Released January 2014.
Hyrule Warriors - Revealed in December 2013. Released Summer 2014
Kirby Triple Deluxe - Revealed in October 2013. Released in January 2014
Wii Sports Club - Revealed in September 2013. Released in October 2013.
Pokémon Rumble U - Revealed in February 2013. Released in April 2013
There are countless more examples, the above were from the top of my head. Aside from the odd occasion such as Luigi's Mansion, X and a few others, Nintendo's games have an extremely small period from reveal to release. I think it is safe to say that their line-up won't be barren this year.