Mac OS 10.13 Beta 3 High Sierra | 4.84 GB.
Apple unveiled iOS 11 and macOS High Sierra 10.13 at WWDC, and while the final versions will not be available until fall, users who are enrolled in the beta test program developers can download the first beta versions now.
The first beta versions give developers an early look at some of the new features announced for the next versions of system software for Mac, iPhone, iPad, Apple TV and Apple Watch.
Currently, macOS High Sierra is only available to Apple developers with a public beta in July. However, for those of you who want to get their hands on at this time, you can do just that. No need to pay for the developer to install and use the developer preview macOS High Sierra. All you need is the installation file and Mac to install it. However, I would not recommend installing it as your default operating system. it is best to install it in a virtual drive or an external machine, due to the inevitable errors that you find.