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.”
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.
