

It is not clear exactly what features will be added to the apps, but Mac Otakara says iPhoto 2.0.1 included tools for editing EXIF information and touch-based brushes for adjusting brightness and other parameters on only specific parts of a photo. Similar editing tools could be added to the iOS version of Photos.
On OS X, the Photos app will see improvements, but Mac Otakara says Aperture-level functions will not be added to the app.
We don't have much information about OS X 10.12 and iOS 10 as of yet, but a recent rumor has suggested Siri integration will be a headline feature in OS X 10.12. Siri on the Mac has been a long-desired feature and the personal assistant will likely be able to do things like adjust system settings, answer quick queries, and open apps.
OS X 10.12 and iOS 10 will likely be coming in the fall months, but we can expect to see a preview of the software at WWDC 2016, which is typically held in June.
Article Link: iOS 10 and OS X 10.12 to Feature Improvements to Photos App