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macOS 12
As little as we know about iOS 15, we know even less about macOS 12, the next-generation version of the Mac's operating system. We do expect it to be labeled macOS 12, however. For a long time, macOS updates were labeled as 10.x, but with the launch of macOS Big Sur, Apple jumped to macOS 11. We've already had 11.x software updates, so the next-generation version of macOS will be macOS 12.
Apple will also give the operating system the name of a California landmark. Apple has been using California landmark names since 2013, and so far, we've had Mavericks, Yosemite, El Capitan, Sierra, High Sierra, Mojave, Catalina, and Big Sur.
There's no word yet on what Apple will use for macOS 12, but the company has trademarked Mammoth, Monterey, and Skyline. Trademarks aren't a good guide to names, though, because Apple has used several names without trademarking them.
SNIP