So after living with the new TV for a few weeks (sold my X900F for $500 cash, paid $1100 22 months ago, $1 a day ownership lifespan cost?), I can say it is warming on me. The most noticable difference is still the 720p upscalling on US ABC and FOX I am seeing. It really makes the 720p look like 1080p on my X900F, so the processing is much better in that respect. I would expect this processing to be even more useful the bigger the TV is. 1080p looks the same as my X900F though, but local dimming and blooming in 100cd/m or so light levels is still non existant. HDR looks pretty enough, the slight boost in peak luminance really isn't noticable over my X900F, but it is very nice to have Dolby light and dark easy to select instead of digging through the menu to adjust the gamma slider. If you install the Calman for Bravia app, you should be able to see two new Custom picture modes, Custom for Pro 1 and 2. These are the same as Custom, only you can make them your day/night SDR or HDR presets, just put the same settings as you would in regular custom. You don't need to calibrate the TV to add the Calman app to the Android OS.
The latency lag is still very very irritating. With Dolby Digital audio via ARC to my Sony AVR, the horrible latency is even more apparent, and mouths move after I hear the voice, and if someone knocks on a door or similar, you will hear the knock before the hand hits the door. Switching to Game mode or 1080p 120hz eliminates this, but you shouldnt need to be in game ode mor 120hz to have audio sync in cinema or TV modes.
I fixed my apps audio cutouts by restarting the TV in the menu. One note on apps audio, there is a setting I believe factory set, that when you hook up to an AVR over ARC, out of the box, the TV Apps wont pass the audio. I think it is the sound passthrough option? This needs to be changed to get ARC for apps. I get DD+ for apps, but cannot cmment on Atmos because I have a standard 5.2 Sony AVR that doesn't have eARC or Atmos.
The only other issue I have with the TV tuner, is that sometimes the tuner will only show coronavirus news coverage. I will attempt to change channels, but it will always be showing coronavirus. Not sure if a future firmware update can resolve that. :-|