Xenoblade 2 took about 3.5 years to make

[Miyamotoo]

caffeinade said:

http://www.perfectly-nintendo.com/xenoblade-chronicles-2-details-famitsu-interview-project-began-july-2014-120-music-tracks-rare-blades/
According to this article, Xenoblade 2 was in development alongside XBCX for about one year.
The team did not know the final specs of the Switch before they started development (should not be a surprise to anyone, but still worth bringing up).

It is nice to see that Nintendo has such a talented, swiftly working team to produce these large scale games in a timely manor.
I only wish I could see the proper time allocation for the project; what were they doing in 2014, how quickly did it take for them to go into full production.
I guess I will never know.

You can add this in OP, they few months ago teased their next project.

https://www.youtube.com/watch?v=PT0gEH5LbBg

https://gematsu.com/2017/08/monolith-soft-hiring-ambitious-new-project-different-brand-image