OS X Yosemite Developer Preview 6 is now available for developers to download from the Mac App Store, though the normally concurrent beta version for iOS 8 is notably absent.
The release includes various tweaks to the operating system, including a slightly altered System Preferences screen and taskbar battery icon.
There's now also a Do Not Disturb option situated in the Notification centre, as well as some fresh wallpapers.
A sixth beta release for Apple's iOS 8 was also expected to arrive along with the one for OS X, but it was missing from Monday's updates.
Back in July, it was announced that Apple was planning to release the two operating systems at separate times, despite the focus on integration and continuity' between the two.
This will reportedly result in iOS 8 landing in September, with Yosemite following in October.
The main features of the new OS include a revamped design, improved search functionality, the ability to make and receive calls from your Mac and much, much more. Details were unveiled at the WWDC 2014 conference in June.
OS X Yosemite beta 5 was released on 11 August.
