MacRumors published a story that Apple has released the second betas of iOS 14.5 and iPadOS 14.5 to registered developers.

Apple Seeds Second Betas of iOS 14.5 and iPadOS 14.5 to Developers

Apple today seeded the second betas of upcoming iOS 14.5 and iPadOS 14.5 updates to developers for testing purposes, with the new beta updates coming two weeks Apple released the first iOS and iPadOS 14.5 betas. iOS and iPadOS 14.5 can be downloaded through the Apple Developer Center or over the air after the proper profile has been installed on an iPhone or iPad. iOS 14.5 is the biggest update to iOS 14 to date, introducing several significant new features. 

Apple Seeds Second Betas of iOS 14.5 and iPadOS 14.5 to Developers