macOS 10.15 Catalina is Now Available on the Mac App Store

macOS 10.15 Catalina is now available from the Mac App Store. Anyone who has purchased Mac OS X 10.6 Snow Leopard, OS X 10.7 Lion, OS X 10.8 Mountain Lion, or has OS X 10.9 Mavericks, OS X 10.10 Yosemite, OS X 10.11 El Capitan, macOS 10.12 Sierra, macOS 10.13 High Sierra, or macOS 10.14 Mojave installed will be able to upgrade for no cost.