The One UI 2.5 update has been sent out to a host of Galaxy smartphones across the globe. If you haven't received it, it may be a good idea to not install it even when you do get the OTA—if Google Camera support means anything to you.
https://www.notebookcheck.net/Do-not-install-the-One-UI-2-5-update-if-you-value-Gcam-on-your-Samsung-Galaxy-phone.502659.0.html
For Night Sight and Lens Blur/Portrait mode, GCam is very valuable on any phone. Thanks for the warning.
I recently updated to 2.5 and lost gcam, but then found Gcam Greatness which works even better than the previous version I had.