Today the world lost a visionary leader, one who saw that games could be more than just mindless shooters built for teenage boys, and led the charge in bringing them to a far wider audience. With the launch of the DS and Wii, Satoru Iwata oversaw one of the most successful periods in Nintendo history, transforming games into things that didn't just entertain you, but that could improve your brain, and keep you physically fit.
Their plans for the future were already in motion before Iwata's death
I think Nintendo will be alright. They've got a new platform to launch, and will likely learn from their mistakes with the Wii U. Iwata was starting to really turn things around for Nintendo, and no doubt laid the groundwork for their future.
While nothing will change, if they want 3rd party support they need on-par hardware, don't expect that any time soon. but other plans are already set in stone, they'll continue.
Can we not worry about that now.
Hopefully more core games, less gimmicks.