Update: word is that the Publish button is being replicated to Settings but is still being retained in its current position on the Home Page of the course as well. In this case, we no longer have the objection we originally stated below. Thank you for the clarification!
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It's a bad idea to move the Publish button away from the Home Page of the course. Blackboard buries their equivalent publish function in settings where it's hard for instructors to find. When we had Blackboard, we had to install a hack to place a link to the publish function right back at the top of the Home Page of the course where instructors could see it. The fact that Canvas had the Publish button in a prominent location was a plus and an advantage over Blackboard. It's a shame now to see Instructure moving in the wrong direction and aping Blackboard on this one.
This decision will make publishing courses more confusing and harder for our instructors.
By the way, we don't see this in beta yet either.