Apple has released the first public beta version of the desktop operating system macOS Sierra 10.12.3. Public beta became available after one day private test developers and almost three months after the release of the new desktop operating system, macOS Sierra (10.12).
to get access to the beta test, you can through the site Apple Beta Software Program by logging in with your Apple ID and registered users through standard update mechanism in Mac App Store.
in beta for macOS developers Sierra 10.12.3 did not find any significant changes. Apparently, this is a small update. Apple currently points to improve the stability, compatibility and security of your Mac.
recall macOS Sierra 10.12 brought a number of significant changes and many small ones. For example, Apple’s computers first became available voice Assistant Siri. Update same macOS Sierra 10.12.2 gave access to more than a hundred new jemodzi included in the Unicode standard, as well as 9 fixed a number of bugs and defects, including a serious problem with the graphics, which have complained about the new MacBook Pro users.