It seems all Rogers S6 Edge have the same issue at the Sprint/Verizon/AT&T ones with the auto-brightness not working properly and the screen not being as bright as it can be unless a flashlight/sun shines on it.
See:
http://forums.androidcentral....
I saw and read this message as well before upgrading but, as you can see, it's very generic. It says nothing with regards to the exact content of the update or what get's fixed/improved. When's the last time you spoke to Rogers about this issue and ...