Apple today pushed the latest iOS 14/iPadOS 14 developer preview Beta 4 update, the version number is 18A5342e, mainly for bug fixes and stability improvements. Apple has launched a new round of iOS/iPadOS system testing.
After installing the correct developer profile, you can download iOS 14 or iPadOS 14 from the Apple Developer Center or via OTA push.
1. iOS 14/iPadOS 14 developer preview test version description file: click here to download
2. iOS 14/iPadOS 14 public beta description file: click here to download