After Microsoft finishes Windows 10 version 20H2, you can easily install it before it’s general release to the public.
For the most part, this is unproblematic: Windows 10 Version 20H2 is a minor upgrade compared to its predecessor without any significant new features. If you already have this version of Windows installed, you can complete this entire process in less than 20 minutes. However, there is a reason you may not want to install 20H2 just yet: if you are using Windows Subsystem with Linux (WSL) 2.0, there is a bug in the current 20H2 build that prevents it from working at the time of this writing. So wait for it to be fixed if you need WSL 2.0.
So update immediately.
Open Settings (WINKEY + I) and navigate to Update & Security> Windows Insider Program.
Click the Get Started button. When prompted, select the Microsoft account to use.
Here select “Release Preview Channel” and then click on “Confirm”. Then click Confirm again. Restart the PC when prompted.
When your PC restarts, navigate to Update & Security> Windows Update and click the Check for Updates button. You will see that the “Feature Update to Windows 10 Version 20H2” is offered. Install any pending updates first. Then click “Download and Install”.
The feature update is downloaded and installed. If you are already using Windows 10 Version 2004, this process only takes a few minutes. Click Restart Now when prompted.
When the PC restarts you will find that you are now using version 20H2. This can be viewed under Info Windows (Winver) or under Settings> System> Info.
Open Settings again and navigate to Update & Security> Windows Insider Program. Check the “Stop receiving preview builds” option to ensure that your PC will automatically sign out of the Insider Program when this version of Windows is released to the public. You will continue to receive serving updates on the normal schedule in the future.