3rd party extensibility
There is they key, helping provide features that Apple can't/wont have added to Photos app out of the gates and could help add many pro features back into photos.
Heck maybe Apple is unifying iPhoto/ Aperature in to Photos as a free app then offer plugins to professionals. I would much prefer this than two separate applications anyways.
Think of it like this, Apple no longer offers Mac os x server, you just get Mac os x then but an extension of sorts (not exactly the same but same concept)
There is they key, helping provide features that Apple can't/wont have added to Photos app out of the gates and could help add many pro features back into photos.
Heck maybe Apple is unifying iPhoto/ Aperature in to Photos as a free app then offer plugins to professionals. I would much prefer this than two separate applications anyways.
Think of it like this, Apple no longer offers Mac os x server, you just get Mac os x then but an extension of sorts (not exactly the same but same concept)