https://wccftech.com/download-ios-12-3-beta-3-for-iphone-and-ipad-devs-only/ > If you are a developer, you can go ahead and download iOS 12.3 beta 3 for iPhone and iPad right now. This release includes bug fixes and performance enhancements. > Apple has been working hard in the background to polish its upcoming software release, and iOS 12.3 is under the microscope in Cupertino’s software labs. Today, the company has released iOS 12.3 beta 3 for all developers registered in the dev program, allowing them to download the build over the air in order to test their software and test-drive upcoming software changes, mainly those that reside in the TV app.