Any chance a MacOS version will ever be published?
Short answer: no.
Long answer: RPGMaker MV games are fundamentally just a local web page running a ton of javascript. The "program" is just a browser without any of the usual UI that presents this web page. Thus, any system with a modern web browser can load the page itself, and thus the game, in THEORY. In practice, the javascript in question is heavily tweaked to assume this artificial environment, so it can get a little glitchy if run on a normal browser, and I use a few plugins that interface with the filesystem (for the special save/load system across games) that assume a desktop Windows environment, so those probably wont' play well if arbitrarily shoved into a different OS. In other words,a DIY port isn't unthinkable if you're technically minded, but I'm not going to devote time to developing and maintaining one (or several) myself, as the overall percentage of my potential audience that ONLY has a Mac, Linux system or phone is fairly small.