Apple has distributed a second version of the Release Candidate of iOS 14.3 and iPadOS 14.3 to the developers. This version released today has build number 18C66, only a minor change compared to the first RC version that was distributed to the developers two days ago.
As a rule, an RC is identical to the version that is later distributed to all users; it is only revised again in the event of serious problems. In this case, Apple had apparently seen a little need for improvement.
iOS 14.3 and iPadOS 14.3 will be released soon
iOS 14.3 brings among other things the ProRAW feature for taking photos in RAW format, which is only available on the iPhone 12 Pro and iPhone 12 Pro Max.
In addition, iOS 14.3 is the prerequisite for using Apple Fitness +, the new service starts next Monday. Against this background, iOS 14.3 should also start next Monday, then hopefully without errors.