Goodbye iPhoto, hello Photos. Apple has revealed a new, cloud-centric photo management and editing app for OS X Yosemite, recognizing the changing ways people take and organize photos, and the rise of the smartphone camera. Built completely afresh, Photos is set to be baked into OS X Yosemite 10.10.3, due for release this spring, but will be offered in the developer build from today. Most critically, with iPhotos and, also confirmed today, Aperture being given their retirement papers, Photos wants to satisfy both novice and expert photographers alike. I've been taking an early look, to see if Apple really has struck the perfect balance between usability and functionality.