I just checked the App Store for updates. As expected, there were updates for several apps in order to add Big Sur support:
- GarageBand
- iMovie
- Keynote
- Numbers
- Pages
- Xcode
I clicked the “Update All” button to be informed “GarageBand can’t be installed on … because macOS version 11 or later is required.”
If you need to purchase Mac OS X 10.7 Lion, you may order it from this page. The most current version of OS X is OS X 10.9 Mavericks. To learn more, please click here. What do you receive: An email with a content code for the Mac App Store. Note: Content codes are usually delivered within 1 business day but may occasionally take longer. The use of content codes and redeemed software is subject. Download apps by Apple, including TestFlight, Beddit (for Model 3.5), Apple Developer, and many more. Download macOS Catalina for an all‑new entertainment experience. Your music, TV shows, movies, podcasts, and audiobooks will transfer automatically to the Apple Music, Apple TV, Apple Podcasts, and Apple Books apps where you’ll still have access to your favorite iTunes features, including purchases, rentals, and imports.
Seriously? Big Sur just shipped yesterday and Apple has already made a flagship app incompatible with everything else?
Apple Catalina App Store Not Working

- Feb 05, 2021 Safari uses these links to find the old installers in the App Store. After downloading from the App Store, the installer opens automatically. MacOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion.
- Oct 07, 2019 Luckily, there is a utility called macOS Catalina Patcher, which lets you download the complete setup file from Apple’s servers. Here is how you can use this app to get a copy of macOS Catalina.
And why is it being presented on my list of updates if it’s incompatible? In the past, the App Store would never show incompatible updates.
Apple App Store Catalina 2020


This is absolutely shameless self-promotion. If they think this is somehow going to convince people to upgrade their comptuers to a new and untested operating system, they’re completely nuts.
UPDATE: Further investigation (see comments below) indicates that this was a mistake, not an intent to drop support for GarageBand on macOS versions 10.*. But at this time (November 17, 2020), the mistake has not yet been corrected.
