Apple today released OS X Yosemite 10.10.3 Public Beta which includes the new Photos app, and it’s ready for you to test-drive.
Remember to review the guidelines carefully and back up your Mac before installing the update.
Photos is an easy upgrade from iPhoto or Aperture.
Apple looks forward to your feedback so the company can continue to make OS X and Photos even better.
Get started with the OS X Yosemite Public Beta Guide here.