Worth an update on this. The new version of Edge based on Chromium is now released.
You can grab it here https://www.microsoft.com/edge if it hasnt been pulled in by an OS update, which might not happen for a few months.
(note that it replaces the old system Edge version)
This also is the start of a big change for Microsofts browsers in that it now updates independently of OS upgrades.
There are also new versions of Edge on iOS and Android which I believe were updated automatically.