When your device becomes eligible for the Windows 10 April 2018 Update, it will download automatically based on your Windows Update settings. Once the download is complete, you’ll be prompted to choose the best time for you to complete the installation. After it’s installed, your device will be running Windows 10, version 1803.
Can’t wait? See Get the Windows 10 April 2018 Update for info on how to get it now.
Here are some answers about how Windows Update keeps your PC up to date.