The first beta of the forthcoming OS X Yosemite 10.10.3 software update which contains the long-expected Photos for Mac application, is now available via the AppleSeed Public Beta service.
Participants in the OS X Public Beta program can download the software update right now via the Updates tab of the Mac App Store. The public beta carries a build number of 14D87, the same like the second 10.10.3 beta that the company seeded to its registered Mac developers a week ago.