How do I test drive iOS 10 with the Apple Beta Software Program?
Apple will launch a public beta of iOS 10 starting in July. iPhone, iPad and iPod touch users interested in giving iOS 10 a try before the official release this fall can join the Apple Beta Software Program.
To get the iOS 10 beta navigate to https://beta.apple.com/sp/betaprogram/ and sign up.
Once the iOS 10 beta is available, users can follow these instructions to install the beta version on their iOS devices.