I would not put your hopes up. We have been thorugh this more than once 

Iwata says Wii will avoid major droughts that plagued GameCube.  (March 2007)

“When we launched GameCube, the initial sales were good, and all the hardware we manufactured at that time were sold through. However, after this period, we could not provide the market with strong software titles in a timely fashion. As a result we could not leverage the initial launch time momentum, and sales of GameCube slowed down. To avoid repeating this with Wii, we have been intensifying the software development, both internally at Nintendo and at developers outside the company, in order to prepare aggressive software lineup for Wii at and after the launch.” says Iwata.  He then says, ”We believe it is important to provide the market with strong software without a long interval in order to keep the launch time momentum.”

Source

Iwata promises that 3DS will avoid major droughts that plagued Wii and DS.

“It’s important that you be able to supply software with no pause,” said Iwata. “With the DS and Wii, following the titles that were released at launch, the momentum dropped when there was a gap in software releases. We’re making plans so that this type of thing won’t happen.”

Source

Nintendo having droughts is nothing new. They were on the gamecube and N64. So this drought has been going on for like 20 years on and more if you want to include the SNES. So no, I do not think there is a bunch of hidden games coming next year. I believe that the only thing the delay did for the NX was making a barren desert look like it might have some life. 

I would not put your hopes up. We have been thorugh this more than once 

Iwata says Wii will avoid major droughts that plagued GameCube.  (March 2007)

“When we launched GameCube, the initial sales were good, and all the hardware we manufactured at that time were sold through. However, after this period, we could not provide the market with strong software titles in a timely fashion. As a result we could not leverage the initial launch time momentum, and sales of GameCube slowed down. To avoid repeating this with Wii, we have been intensifying the software development, both internally at Nintendo and at developers outside the company, in order to prepare aggressive software lineup for Wii at and after the launch.” says Iwata.  He then says, ”We believe it is important to provide the market with strong software without a long interval in order to keep the launch time momentum.”

Source

Iwata promises that 3DS will avoid major droughts that plagued Wii and DS.

“It’s important that you be able to supply software with no pause,” said Iwata. “With the DS and Wii, following the titles that were released at launch, the momentum dropped when there was a gap in software releases. We’re making plans so that this type of thing won’t happen.”

Source

Nintendo having droughts is nothing new. They were on the gamecube and N64. So this drought has been going on for like 20 years on and more if you want to include the SNES. So no, I do not think there is a bunch of hidden games coming next year. I believe that the only thing the delay did for the NX was making a barren desert look like it might have some life. 

Kimishima was sure to reiterate that NX was to have a lineup that would be in continuous momentum. So, I would think there's a lot of content coming on NX from Nintendo. Give or take, only 2 true next gen titles from Nintendo EAD now NPD, we got Mario Kart 8: A true next gen Mario Kart and Smash Bros. I don't count 3D World (Glorified 3D Land), A Zelda game that isn't even getting a solo release on the console it was made for, a souped up 2D Mario, A cruddy Animal Crossing party game, Paper Mario Color Rash, Mario Tennis Ultra, OKAY, I forgot about Pikmin 3 and Yoshi, so there's 4 true next gen Wii U games. We've got Star Fox Zero...*cough*, Kirby Rainbow Curse thing, Game and Wario... need I go on.

These titles aren't Nintendo's best work and I believe their focus shifted to NX late 2014 to mid 2015 so projects that were intended for Wii have been pushed to NX with a bit of polish. We don't even know the state of Color Rash at this point. It's most likely a budget title for the holiday. And 3DS will most likely take the reigns and try to pull Nintendo through. I believe NX will be covered for at least a year. A year of solid consistent content. As long as 3rd parties aren't disgusted by it.

Difference is that in each of aforementioned instances, Nintendo was putting out software to more than one platform: a console and a handheld. NX is only one as far as we know.

The Wii actually did avoid droughts atleast until the tail-end of it's life, so they were truthful once, and they could very well be again as unlike any of their previous systems the NX should have a unified library

I'd just be happy if they supported it like the Wii. Seemed like they just dumped a ton of classic and new IPs out on the Wii. I didn't even truly realize how much they supported it until now. Sure the end of the Wii wasn't good support but they hit their stride at start and middle. They had a very good mix of almost all the gaming genres.

There was about 3-4 games released every week or so on the VC and there was a good amount of systems and third party games on Wii VC. Perhaps the Wii U eshop VC support is weak because the NX won't allow games to be transferred to the new systems like Sony and Microsoft did. Oh well... I can always fire up Wii mode if needed.

I see potential with an unified eshop and game library.  Just have to wait and see if they deliver.