Apple seeded their fifth beta of iOS 10.3 to developers. This comes one week after the second build. In this version of iOS we find something called Find my AirPods. This will allow you to locate a lost EarPod. We also see a new file structure for better performance, tweaked app animations, and new in-app review request prompts.
To get this version developers can go to Settings and find it under software updates. If you don’t have the beta testing profile installed, you can go to the Apple Developer Center and get it from there.