The new version contains the following changes:
The view-source command enables you to display source code of the specified method based on info in debugging symbols (if they are present) or decompiled source (currently only a limited decompilation support for methods without body, i.e, abstract or pinvoke).
The fileinfo command displays information about assembly files, such as PE header data or assembly-level custom attributes.
The Roll-forward feature means that you can run the app on .NET 5.0+, even though it targets .NET Core 3.1.
New Source view UI look with syntax highlighting: