After the fall creators update released last year, the next major update for Windows 10 code named Redstone 4 will be released in the next couple of months. Usually the major updates contain many new features.
If you are brave enough and would like to try the Redstone 4 preview build which is not the final version, you can enroll in to the Windows Insider (https://insider.windows.com/en-us/) program.
After you enroll in to the Windows Insider program there are some steps on your Windows 10 Device hat you will have to configure in order to receive the latest build.
Click on Settings => Update & Security => Windows Insider Program and click on Get Started
Click on the Link an Account + sign and provide the account which you used to enroll in to the Windows Insider Program
Select your Windows Insider Account and click Continue
From the dropdown select Active development of Windows and click Confirm
Select Fast from the drop down and click confirm
Read the Privacy Statement and Windows Insiders Agreement and click confirm
As the final step click Restart now
After successful configuration it will look similar to the below
After the restart of the computer, Click on Settings => Updates & Security => Windows Update. The latest Windows build will start to download (at times it may take some time for the preview build to display)