Feels like lower contrast between switch/button elements and their tile, and between the tiles and background. Big loss in clarity as a result . Eg if you can't see the box that a switch sits in you can't easily judge whether it's on or off (colour helps but the yellow isn't *that* distinct from white in daylight and you lose that if you have 'plain design' enabled). It used to be background/tile/button getting lighter - now the button is just background (see photo of iPhone screen).
I don't think the lack of contrast is helped by the bright green top bar - I think that's making it harder for my eyes to see the contrast between the elements below that are dark grey on black.
The Android tablet app has a 'floating' nav bar on my Galaxy tab 9. Again, lack of contrast means really tough to see and clashes with the tablets own nav when bring that on screen.
Labels gone from the bottom nav icons on iPhone - does a rounded square say category clearly? I don't think so. nor squares with square 'room'.
light switch behaviour has changed - turning a switch to 'on' means my lights don't work the same in the app as on the wall (+ mood used) and some of the moods the switch enables aren't even in my mood rotation using the wall switch.

