Xcode 12.5 includes SDKs for iOS 14.5, iPadOS 14.5, tvOS 14.5, watchOS 7.4, and macOS Big Sur 11.3 and Swift 5.4 toolchain. The thing that excites me more is that Simulator can now record video and export as GiF, something I needed to use simctl command.
If you want to download Xcode as dmg directly, I can recommend xcoderelease