https://www.pcgamer.com/the-next-major-update-to-windows-10-is-scheduled-to-arrive-on-monday-april-30/

At long last, Microsoft has settled on a release date for what was previously known as the Spring Creators Update, otherwise known as Redstone 4. Now called the April 2018 Update, the first of two major upgrades for Windows 10 this year will begin pushing out to PCs on Monday, April 30.

Microsoft reportedly wanted to start dishing out the April 2018 Update on April 10, though a bug discovery late in the game prompted the company to delay the rollout and do some additional testing through its Windows Insider program. It seems to have worked out that pesky issue, though, and has committed to an actual release date.