Or, none of the above and you haven't thought this through.
Maybe Majora's Mask 3D only entered development 12 to 18 months ago? When was there the job listing for Grezzo? Not two or three years ago, I think.
EDIT: It may have had a very quick development time. The job listing appeared in June of this year: http://gimmegimmegames.com/2014/06/grezzo-job-listing-hints-zelda-game-development/
SECOND EDIT: I completely missed the Eiji Aonuma announcement to which this thread is obviously a response. Apologies. Maybe everyone at Grezzo is just really, really drunk?







