Update: Unfortunately, the Cascadia Code font is not complete. A very large number of Unicode characters are missing, making it unusable in f.x RAD Studio or with any application or language that uses characters outside the very limited ASCII range.
Going to try it out instead of my current favorite: Source Code Pro by Adobe.
“Microsoft has announced a new version of their Cascadia Code which is designed with developers in mind. Cascadia Code was first announced by Microsoft at Build back in May and is finally shipping to the Windows users. Microsoft noted that the new font is designed for command-line applications including Windows Terminal. ”