https://wccftech.com/windows-10-1803-fastest-spreading-version/

Some of you may have linked us to user reports complaining about bugs and problems in the latest version of Windows 10, but it appears Windows 10 version 1803 is experiencing the fastest rollout of any Windows 10 feature update so far.

Just a month since its rollout, the Windows 10 April 2018 Update is already being used on over half of all the Windows 10 machines. In comparison, Windows 10 Fall Creators Update reached to 50 percent adoption rate in two months, which was then the fastest growth rate of a Windows 10 version. Windows 10 Creators Update had taken three months according to stats shared by AdDuplex.