A few years ago I started learning Unity, PlayMaker, and Wii U development, all at the same time. I REALLY, REALLY, REALLY wanted Nintendo and Playmaker to make an official agreement, with official support, etc. That never happened. So after putting aside any hurt feelings on this matter, a handful of us figured out how to get PlayMaker to run by simply adjusting some settings. Also, a few have made and shared custom actions, etc (on the Nintendo dev forums). I was happily able to release 2 PlayMaker powered games for Wii U. My guess is history will repeat itself with the Switch (as of this time I do not yet have a Swich dev kit). My advice is, if you love Nintendo, and hope to make a game with Playmaker... just start. Get on the Nintendo Dev Portal and sign up. Not having "official" support was not a deterrent last generation. Best luck to everybody and keep having fun!!