Hooray! iOS 10 developer beta is now available for download

In order to get the beta image of iOS 10, you need to head here and snatch the image. Afterwards, all you need to do is flash the developer beta through iTunes. Don't forget to make a backup! A backup a day keeps a load of torn hairs away!
As usual, be advised that iOS betas are not intended for daily drivers. Numerous bugs and issues are certainly there, so flash at your own risk.
As far as iOS 10 goes, it's already shaping up to be a pretty big release with lots of new features on board. There are redesigned lock screen notifications, smarter Siri, revamped Apple Music, the ability to uninstall stock apps, smarter Photos app, refreshed Messages app, and way more.