I'm in the UK too but I was too impatient so I forced the update using a VPN and ethernet from Bridge to Mac today.
I'm not 100% but I think the dimmer switch has to be reconfigured. I've set mine like this for now:
- All presses of top button are now "Last on state" on Dimmer Switch (previously each press activated a default Hue scene like Energize, Concentrate, Relax, etc)
- Home app Automations for time of day (daytime activates 'Daytime' scene in HomeKit, sunset onwards activates 'Evening' scene, these are both with Adaptive Lighting but 100% and 50% brightness.
- One more Automation which is IF people are in, change scene to Evening at Sunset.
This way whenever I press the top button, the lights turn to their last used state then immediately adjust brightness depending on the time of day w/ Adaptive Lighting enabled. And if people are in, the lights all drop from 100% to 50% at sunset (or turn on at 50% if they weren't on).
I'm not sure if this system is perfect yet and hope to see other people share their set ups.
The lights are definitely warming gradually as the day goes on. Interestingly they're still not too warm at sunset itself, it's taken another few hours to get warmer slowly since.
Be interesting to see how much warmer they get and try and figure out how it works!