Apple today released the first public preview of macOS Sierra, this year’s upgrade to the operating system formerly known as OS X.

The preview arrived a week earlier than Computerworld‘s forecast; that prediction was based on the span between the developer unveiling and public beta of last year’s OS X El Capitan.

This was the third year straight that Apple has made previews available to the general public. The Cupertino, Calif. company restored the beta program in 2014 with OS X Yosemite after 14 years of shunning early code to non-developers.

Apple’s registered developers were handed Sierra on June 13, the opening day of its annual Worldwide Developers Conference (WWDC). During the same keynote presentation, Apple also rebranded OS X as “macOS,” a nod to the nomenclature of its more widespread iOS.

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