The new fonts are already available in Office apps on Windows, macOS, Web, Android, and iOS. There is no need to download font files and install them manually. Here is an example of the new fonts together with the current default Calibri:
It will remain in the Office apps along the new font families. It is important to note that Microsoft does not plan to get rid of Calibri. The Software giant wants users to check out new fonts and provide feedback, so the company can pick the best one that will serve as the default font for years to come. Microsoft says new fonts represent various styles, such as humanist, geometric, swiss-style, and industrial. New custom sans-serif fonts include the following: Tenorite, Bierstadt, Skeena, Seaford, and Grandview.