The pace of development of the Edge browser, based on the Chromium engine, turned out to be very fast. Microsoft announced its intention to rebuild Edge using the Google-sponsored Chromium browser engine in December 2018. Previews were released in April 2019, including the Dev testing channel, updated weekly, and the Canary channel, updated daily. In May, the ability to download for Mac was added, and in June, a preview for Windows 7 and Windows 8 was added.

The Edge Beta channel has now been launched, and Microsoft Windows Experiences corporate manager Joe Belfiore has said it is "the third and final channel for pre-testing the browser before the official launch." The beta version will be updated every six weeks until the browser is available to everyone.

When will Edge Chromium become publicly available? Microsoft is assured that they did not set a specific date but said they would be happy to release a stable release in early 2020.