Developers can already download the OS X Yosemite 10.10.3 beta 2 with the new Photo application in Mac Dev Center. Ordinary users will have to wait for the final version of the update, which will be publicly available upon completion of testing.
At the same time as iOS 8.3 beta 2 Apple released the second beta of OS X Yosemite 10.10.3. The most basic difference from the previous version is the availability of the Photo-enabled cloud photo archive iCloud.
The Photos application for Mac automatically organizes your library of images and offers several tools for editing. The app also enables storing photos and videos to the cloud using iCloud Photo Library allowing access from any device connected.
The new build number was 14D87h, but significant differences from the first beta, it has not. However, if you notice any features, please share with us in the comments.