Apple has reportedly released its OS X Mavericks Golden Master to developers.
According to 9to5Mac, the update became available last Thursday to AppleSeed users and Apple employees.
The move signifies the Cupertino firm's completion of OS X Mavericks; this will be the final version released to customers later this month, the tech blog said. According to unnamed 9to5Mac sources, the operating system is labelled as a build number in the high 13A590s or low 13A600s — a slight increase over the current 13A584 version.
Apple did not immediately respond to a request for comment.
The next-generation operating system was unveiled in June, initially released as a preview version for developers, with a general release expected in autumn.
The OS took a detour from the usual cat-name theme, following Mountain Lion and Jaguar and Snow Leopard with the Mavericks title, named after a surfing location in northern California.
During Apple's Worldwide Developer Conference this summer, the team showed off new system features like Finder Tabs, which allow users to draw all windows together, while Tags will allow for tailored files.
There's also boosted support for multiple displays, and those with AirPlay-connected HDTVs can also use it as a full-power connected display.
There is no word on when Mavericks will officially arrive, but various reports tip this month as the final date. In traditional Apple form, the company is likely to release the new system the day after its fourth-quarter earnings announcement later this month.