The latest beta of iOS 10.2 has some new features like a new widget for the stock Videos app , a new Preserve Settings option for saving your Camera app settings, and some new wallpapers. If you want to try out this beta then you can sign up for Apple public beta testing program by following this link.
Yesterday, Apple released the iOS 10.2 Beta 1 for public testers. It came a day after it was released to the developers and iOS 10.1.1 was released publicly due to missing health data bug. If you are a beta tester then you can get the beta via OTA through settings app.