You can learn more about all new features in iOS 10 here.
Functionality not in iOS 10 Beta 1
• Faces in the Photos app do not sync across your devices.
• Voicemail transcription is not supported in iOS 10 beta 1.
• Functionality that requires adoption from App Store apps, such as iMessage apps, SiriKit,
and Maps extensions, will not be available until those apps are able to adopt and submit
to the Store.
• Support for rich notifications is optimized for 3D Touch, and in iOS 10 beta 1 the feature is
available only on iPhone 6s and iPhone 6s Plus. Future betas will provide access to this
functionality for users of iPhone models without support for 3D Touch
Developers can download iOS 10 from the link below. Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.