Welp, I installed the IPSW. Wish me luck.
FWIW, I've been running the "pulled version" (which appears to be the same build as the GM that was later reposted in the dev portal) since Tuesday and haven't had any issues. Running smooth as glass and good battery life.
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It's only been a few days, but so far I've seen improvements in general. Battery life has been excellent, going from 100% taking off the charger around 6AM and still above 40%-50% when going to bed around 11PM, with just a handful of times I've put it on the wireless charger while washing the dishes or doing something random for a moment.. Apple Watch has been pretty good on Battery life, too. Again, all still kinda early as I'd expect some indexing and stuff, but it's been good there. I was also having issues with custom notifications not playing accurately, instead playing a default sound or even playing a loud ½ ring and then muted when the phone rings. That's no longer an issue. I've STILL been having odd issues with the "Other" section in iPhone local storage taking up more than 50-60GB, up until iOS 14.1 where it's now back down to between 6-8GB. I'm finding that the Music app has been playing where I left off when connecting CarPlay. Widgets have been updating as expected (I use Carrot and a number of 3rd party widgets, not the stock Weather app).
I'm currently erasing my iPhone 11 Pro Max & Apple Watch S6 to restore from a backup. Pretty confident everything will be running just fine from here (famous last words, I know lol).
I definitely agree battery life on both iPhone 11 PM and Watch S4 has been much better since upgrading to 14.1 and 7.0.2 respectively.