Nintendo can and has sat on many games for quite a while.
This is repeated so much but does anybody really know for sure? The only game that comes to my mind is BotW, and even that isn't even 100% sure as there had been rumors about a delay post march 3rd 17. I think somebody claimed the voiceovers and translationen demanded a push, it was obviously false. The quintessence is: You can never believe anything from these attention whores. So, I am asking, which games had really been finished but halted back? I'd really like to know.
NSMBUDX. The title screen even says 2018.
And Xenoblade Chronicles 3 obviously. They wanted to release it in September, many months after it's done.
Two examples already. Why wouldn't there be more?