OS X Yosemite Developer Preview 3 Download Available to Developers
OS X Yosemite Developer Preview 3 has been released by Apple to all developers running current beta builds of OS X Yosemite, the next major version of Mac OS. The new build number of OS X 10.10 beta is versioned as 14A283o and will run on all compatible Macs.
The simplest way for Mac developers to get OS X Yosemite Developer Preview 3 is to update through the Mac App Store, accessible from the Apple menu > Software Update. The update weighs in around 1.1GB. Registered Mac developers can also choose to download the complete installer from the Mac Dev Center and App Store.
The current Developer Preview builds are limited to those who have registered specifically with Apple’s development programs, but Apple is expected to have a public beta for OS X Yosemite in the coming months for users who have opted-in and are interested in participating.
Running OS X Yosemite Developer Preview is best reserved for development hardware that is not intended for daily usage, though installing OS X Yosemite to a partition and dual booting their Mac does work just fine, as does choosing to install Yosemite onto an external drive and booting it outside of their primary stable Mac OS X installation.
OS X Yosemite will be released this fall and include many new features, enhanced cross-platform support for switching between iOS to Mac, and an all new restyled user interface.
Separately, developers enrolled in the Apple mobile iOS Developer Program can also now update to iOS 8 beta 3 through the Software Update mechanism.