The following comes from Eurogamer...
- multiple inside sources state that Nintendo has had a change of heart and will be bringing the game out at Switch launch
- the title will hit this March in both North America and Japan
- launch timing in Europe is unclear
- NoE pushed for as long a period of testing and localisation as could be allowed
- NoE had been working on the proposed schedule of a global launch after the Switch itsel
- NCL had always wanted the game to launch in March, and had been uncomfortable waiting until later
- the decision to move ahead with March regardless of Europe was only finalized by committee at the end of last year