MacRumors published a story that Apple has released the third betas of iOS and iPadOS 14.7 to registered developers.

Apple Seeds Third Betas of iOS and iPadOS 14.7 to Developers

Apple today seeded the third betas of new iOS and iPadOS 14.7 updates to developers for testing purposes, two weeks after seeding the second iOS and iPadOS 14.7 updates. iOS and iPadOS 14.7 can be downloaded through the Apple Developer Center or over the air after the proper profile has been installed on an iPhone or iPad. The new iOS and iPadOS 14.7 updates may be focused on under-the-hood bug performance improvements and bug fixes for issues that weren't able to be addressed in iOS 14.6, but a few minor features have been found. Apple in iOS 14.7 will expand the Air Quality Index feature to additional countries that include the Netherlands, France, Italy, Spain, and Canada. 

Apple Seeds Third Betas of iOS and iPadOS 14.7 to Developers