Apple has released an RC version (Release Candidate) of iOS 14.3 for developers, which is definitely the version that will be released early next week.
iOS 14.3 has been launched in what will probably be the final version if no major errors are detected
This version supports AirPods Max which will be launched on Tuesday next week, so we expect iOS 14.3 to be launched in the final version for everyone the day before so that you have time to update and are not surprised that they do not work with 14.2.
In addition, there is support for Apple Fitness + which was launched today, and Apple ProRAW which provides much more image information and therefore greater opportunities to edit the images afterward.
We and many others complain about poor battery life during use and hibernation with iOS 14.2, and we have not noticed any improvement with iOS 14.3 beta 3 - maybe this version fixes the problems?