You know I just realized. The Switch 2 version of New Horizon will be the only physical complete version of the game. So if for some reason the download is ever lost or Nintendo stops supporting it years later this will be the only version with everything. Otherwise you'd have a 2020 pre-launch New Horizon without holidays, art, diving, and so forth.
I remember always bringing this up through the years and now they finally released the 'complete' version. Unless they add more. In which case, it won't be.