Microsoft has recently released KB4541301, KB4541302, KB4559309 updates for Microsoft Edge for Windows 10 versions 1803, 1809, 1903 and 1909, and 2004 and are available for download via Windows Update.
Microsoft launched a new Microsoft Edge browser based on Chromium in January this year and is available as a manual download for Windows 7, 8, 8.1, and Windows 10.
The company also announced in January that, the new Edge will be pushed via Windows Update to Windows 10 devices, beginning with a subset of windows insiders in the Release Preview ring. The broader rollout seems to be happening now.

First, Microsoft has released KB4541301 (Edge Update for Windows 10 versions 1803 and 1809) and KB4541302 (Edge Update for 1903 and 1909 versions) successively, later the company replaced these by delivering KB4559309 for all Windows 10 versions.
It’s worth noting that if you’ve not installed Microsoft Edge manually on your system in Windows 10, Windows Update will automatically download and install the new Edge and replaces the old Edge browser.
After installing the update, you need to restart your system and set up new Microsoft Edge by signing into your Microsoft Account.
New Microsoft Edge shortcuts will replace Edge Legacy.
You can’t uninstall new Edge from Control Panel or Apps section in the Settings App.
The Microsoft Edge legacy will be hidden, but you can run both Legacy and new Microsoft Edge side-by-side if you follow steps mentioned in this article.
Old Edge data such as passwords, favorites, open tabs, tabs you’ve set aside will be ported to new Edge.
Related articles:
Microsoft updates Edge Stable ahead of January release
Microsoft Edge Stable to be released on January 15, Beta 79 now available
Microsoft Edge Chromium stable quietly imports tabs you’ve set aside in Old Edge as Favorites
How to run Legacy and New Microsoft Edge side by Side on Windows 10