Apple has released public betas of iOS 10 and macOS Sierra:

Public Beta of iOS 10 Now Available for Download
Public Beta of macOS Sierra Now Available

Public Beta of iOS 10 Now Available for Download

Following this morning's announcement that it would be launching public betas for both iOS 10 and macOS Sierra, Apple has now released iOS 10 for members of the public beta testing program.

Read full article @ MacRumors

Public Beta of macOS Sierra Now Available

Apple's public beta program for macOS Sierra is now live following this morning's announcement that both iOS 10 and macOS Sierra would be made available today. macOS Sierra will include a number of changes and new features such as Siri integration, Apple Pay for Safari, Auto Unlock via Apple Watch, and improvements for Photos, Messages, and Apple Music.

Read full article @ MacRumors