With Chromium-based Edge, Microsoft will retain the legacy Edge do?
Microsoft in April released a preview version of Chromium-based Edge, a month after the new Edge landing macOS system, then Windows 7 system. At the same time, Microsoft still retains the legacy Edge browser on Windows systems, and update (add new features and improved application) on time.
Edge still retains the old version, and Microsoft has not disclosed when it will be 10 deleted or replaced in Windows. Does Microsoft plan to "accommodate two tigers mountain"? However, according to the latest 10 20H1 preview version of Windows, it seems to imply that Microsoft may update in Windows 10 released in the first half of next year legacy Edge will be removed .
In the latest Windows 10 20H1 Build 18936, Microsoft added a new entry named 'HideUwpEdgeFromAppListIfWin32EdgePresent', generally means that when Windows 10 will automatically remove or hide the UWP / Classic Edge detects a user has installed Chromium version Edge. This may be Microsoft to remove the old Edge preparatory work done.
The new Edge is currently only provides a test version is not yet available stable version. However, Windows 10 20H1 update is expected to be released in early 2020, then, I believe the new Edge also stable enough.