Yesterday Apple released macOS Big Sur 11.0.1 beta 1 to developers. The “dot” update comes before the public release of macOS Big Sur, which Apple is likely holding off on releasing until it announces Apple Silicon Macs later next month.
Speculation is that Apple has the final build of macOS Big Sur 11.0 complete and is delaying its release to prevent any possible leaks of unreleased Macs, but that effort has seemingly failed. The latest beta includes 2 new bundles for unreleased Macs, each labeled 2020, and none appear on the latest version of macOS Catalina. In total there are 3 unreleased Macs referenced in the beta, but one of them appeared in macOS Big Sur beta 10, first spotted by Twitter user @HarckerTech.
The bundles are listed as 2020h, 2020f, 2020g, and provide no underlining information. For reference, the bundle “2020e” is the 27-inch 2020 iMac, “2020d” is the 16-inch MacBook Pro, and “2020c” is the 13-inch MacBook Pro. Earlier this month Apple registered multiple new Macs to the Eurasian database, all running macOS Big Sur and are likely to be Apple Silicon Macs.