Considering that the new version was released after our release, we haven't been able to test it with it and cannot guarantee that it will work without issues on Angular 20. However, the latest version at the time - Angular 19, is officially supported.
Regarding the Kendo UI for Angular product, they do officially support Angular 20 according to the docs - Angular System Requirements - Kendo UI for Angular, though you need to use v19.1.0 or a newer version of the packages.
Our Native Angular Report Viewer is built with components from the Kendo UI for Angular library and if you are using a version of the library that supports Angular 20, I would expect the report viewer to function as normal also.
I hope that the provided information is helpful. Let me know if you have any additional questions.