I noticed the two versions of Logic and Mainstage in the App Store, and would like to know... what happens if I install the Creator Studio version, and not my perpetual-license ones? Won't do it myself, just curious if the ACS version would identify a previous perpetual license, or will it point you to start a demo period. Has someone done it?
EDIT: Just tried it with Pixelmator Pro, since the perpetual license version that shows in my App Store app (and the one I have installed) is still 3.7.1, and the ACS version is v4.0. It prompts you to sign up for the free trial, and won't let you create a new image project if you don't accept said trial, so it doesn't identify any existing perpetual license. I assume the same applies for Logic, Mainstage, FCP, etc. Will they update the perpetual license Pixelmator Pro to v4.0? Who knows...?
Stand-alone iWork apps from ACS have the annoying "Learn more about Creators Studio" up sale in the menu bar when clicking on the app name, template library has a "premium" section, but in general function like the previous version, and you can hide the "premium" tools in the tool bar. No need to subscribe to use them regularly.