The new Photos app for Mac included in pre-release build of OS X 10.10.3

[iMore.com]

The all new Photos app for Mac, which Apple first announced and demoed at WWDC in June 2014, is now available in a pre-release version of OS X 10.10.3. The download can be accessed available by approved testers and developers.

Full story from the iMore Blog...

 

[kch50428]

Preview of new Photos App: https://www.apple.com/osx/photos-preview/#mn_p