Apple releases OS X 10.10 Yosemite Preview 4
Apple has released an update to its new operating system, Yosemite. This version, called Yosemite Preview 4, is intended to allow developers to test and improve the highly anticipated operating system.
And something that immediately stands out, once you run the new OS X 10.10 beta , is the iTunes application, which, in addition to its striking icon, modifies the interface and operation of the iOS version.
But let's focus on the specifications and new features that it brings Yosemite Preview 4 version. Since it has been done, an article detailing a bit more about the update of the multimedia application, iTunes 12.

Changes to come with OS X 10.10 Yosemite Preview 4
As we mentioned, this update initially arrives so that developers can carry out tests and apply solutions to the various errors present in the new operating system.
And one of the first changes we'll be able to see is the improvement made through this version's new "Dark Mode ." Its appearance is graphite-colored, and the taskbar and Dock are presented in dark tones. This also improves and adapts the existing icons for better user experience.
However, in addition to this visible variation, we will find minor changes in the FaceTime interface , where the Handoff function has specifically modified the dialog boxes, using higher contrast letters within the Call, Answer and End options.
On the other hand, we are presented with a new design for the Calculator app, which now opts for a completely new design for iOS.
Finally, we would like to point out that despite the small changes shown in this update, we hope to have provided you with vital information about what's coming to OS X Yosemite.
The update can be installed via Software Update from the Mac App Store . And if you're not a developer but still want to learn about and try out the new features the company plans to include in the new operating system, you can do so via the link we'll share.
Here are more details: Yosemite Beta Program