Windows 10 native Photos app has received an update on both Mobile and PC. The update takes the app version to 16.1003.10012.0.
The update brings Theme change options to the app. You can now set Light / Dark Theme or allow system settings for Dark / Light Mode in Photos settings. Coming to PC, hamburger Menu is gone and you can also see the Theme options.
There is a new icon for Edit option too. You can also notice some new app animations here and there. This update is only available for Fast Ring for now.