Hey, thanks for the question! Unfortunately a mac release really isn't in the cards right now, I have my hands full with just Windows at the moment. I'm not going to rule out doing one eventually, but if a mac release DOES happen, it won't be until after the game is completed, sorry!
Sorry, we don't currently have a release date and aren't planning on announcing one until the game is very close to completion. We want to be very confident in the date we put out and wouldn't want to let people down by announcing a date we can't stick to.