Apple's Photos for O SX is out. I have downloaded Photos and it is importing a 140GB library that I share with my wife. Sharing should be easier now. I have LR (and PS) installed on my Mac and I will probably switch over to LR since Aperture is no longer being supported; and, my latest camera is not supported in Aperture. I will let you know what I think of Photos after I have had a chance to use it for a few days.