I just had a look. AFAICT, it's not working. 'Display mode' is set to 'Disable all adjustments' and if I try to change to the other options (Automatic, Day, Night) nothing happens ('Disable all adjustments' is still displayed). The option below that, 'Color temperature' is greyed out, and the ADVANCED option below that does not respond to my tap.
I tend to use the Twilight app anyway, so no great loss for me.