Dying Light 2 will get a photo mode and new features.
Dying Light 2 will get a photo mode and new gameplay features at an unknown date. Developer Techland explained this in an interview.

Dying Light 2 will get a photo mode and new gameplay plus on an unknown date. Developer Techland explained this in an interview with Game Informer editors.
Also, lead game designer Tymon Smektała reveals that the roadmap for the first year is not yet complete. If new unannounced features come out, Techland will invite you to discover them for yourself.
Techland doesn’t want players to know in advance what they can expect in the future. Therefore, the studio has not yet released any concrete information about Dying Light 2’s first story DLC.
He goes on to say that he has read the fan speculations about this expansion and can say with certainty that no one is right at the moment.
What we can say for sure right now is that the first major Dying Light 2 update is now available on consoles and PC.