The next version of Sierra is already on its way since Apple is evidently working hard to make it available as soon as possible. The third beta of Sierra has been available since last week and can be downloaded by any Mac system that is compatible and for those users who are enrolled in the Apple Developer Program.
If the MacOS 10.12.1 Beta 3 is already installed on your system, the latest update is easily up for grabs for you via the Mac App Store. In order to do this, you simply have to be connected to the internet via WiFi or LAN. The next step is to open the Max App Store and locate the Updates tab, under there you can download the latest update for your Operating System.
The download for MacOS 10.12.1 Beta 3 will take a while depending on your internet speed. Once it is finished downloading, it will install then require you to restart your system. Remember to save all important documents before restarting your system.
Moreover, the MacOS 10.12.1 Beta 3 is now available for Public Beta Testers too. All that the user needs to do to be one of them is to go to Apple.com in order to access the Apple Beta Software Program. This option, unlike the Apple Developer Program is free, while the latter requires the user to pay $99 annually.
Users must remember that these are beta software, and installing them on your main system may not go all according to plan, anything can go wrong at any point. It is best to try the new MacOS 10.12.1 Beta 3 on a spare computer to minimize risk of work loss.