Mircrosoft has released Edge browser based upon the Chromium engine. Do note that Google Chrome browser is also based upon the Chromium open source project. But Chrome browser and Edge browser are different.

The browser was released on 15th January 2020. You can download the browser from the link below (it goes to Microsoft website).

https://www.microsoft.com/en-us/edge

Earlier versions of Edge browsers were based upon Chakra Engine.

You can read about the intention behind the move to Chromium-based browser in the link below

https://blogs.windows.com/windowsexperience/2018/12/06/microsoft-edge-making-the-web-better-through-more-open-source-collaboration/#IIycUFupVTBcbAY5.97