The company's browser will still be named Edge and should retain the current look and feel. The decision to switch was motivated primarily by compatibility problems: Web developers increasingly test their pages exclusively in Chrome, which has put Edge at a significant disadvantage. Microsoft's engineers have found that problematic pages could often be made Edge compatible with only very minor alterations, but because Web devs aren't using Edge at all, they don't even know that they need to change anything.
Read more on this...
Also refer to this site information Microsoft Edge goes Chromium (and macOS)