Microsoft's new Chromium-based Edge will have a dedicated extension store
Since Microsoft announced that it will be transitioning its flagship Edge web browser from its previously proprietary EdgeHTML base to Chromium, we later learned that it will also natively support Google Chrome extensions. That will not stop Microsoft from implementing a dedicated Microsoft Edge Store for extensions to its web browser.
In a report by Neowin that shares a look into how the new Chromium Microsoft Edge is designed, the site shares a look at the Microsoft-curated extension store, which shares many of its apps with the Chrome Web Store such as Avast! Online Security and BrowserStack.
That being said, extensions from the Chrome Web Store directly still install and operate as intended as long as you enable a setting to allow them.
The new "About Microsoft Edge" page showcases updated copyright information alongside stating the fact that the new Edge is based off of Chromium "and other open source software." There is currently no announced public release date for the new Chromium-powered Microsoft Edge.