TheLoop reported Wednesday that macOS users running the latest High Sierra 10.13.4 will now get a warning when launching a 32-bit app. Apple kicked 32-bit apps off iOS starting in version 11, and now it seems they are starting the process in macOS as well. The alert will only happen once, so no worry about constant nagging. Apple posted a notice on their support page about this new alert, and notes that all future Mac software will eventually be required to be 64-bit. I have to wonder if this is a move at least somewhat inspired by the rumor that Apple will be using it's own CPUs in the future. Apple began the transition to 64-bit hardware and software technology for Mac over a decade ago, and is working with developers to transition their apps to 64-bit. At our Worldwide Developers Conference in 2017, Apple informed developers that macOS High Sierra would be the last version of macOS to run 32-bit apps without compromise.