Apple releases OS X Yosemite 10.10.3 build 14D72i with Photos app

Apple has released the first OS X 10.10.3 (build 14D72i) of Yosemite to developers for testing today, and as part of this release Apple has included a beta version of the new Photos app that was originally revealed back at WWDC 2014. The Photos app will replace both iPhoto and Aperture and become Apple’s single photo library management app. Photos will also support the iCloud Photo Library feature, which allows users to store their entire library of photos and videos on iCloud, having them accessible from any Mac, as well as supported versions of the iPhone, iPad, iPod touch, and web browsers. You can download the new software through the Mac App Store if you're already running a dev version of OS X, or if not, you can find it in the Mac Dev Center.