There seems to be quite a bit of speculation in this article. I think it's more likely that Microsoft will replace the engine in Edge from EdgeHTML to Chromium. They'll probably keep the name Edge, and make it look the same and have more or less the same features. (Though maybe they'll do a re-release with a code name, like Mozilla did with Firefox Quantum.) This makes sense to me from a business perspective, as it's much cheaper to use someone else's engine than to maintain their own, and functionally it makes little difference.