Currently, the ThemeBuilder application supports only major Kendo releases (like R1, R2, and R3) and the version of the theme that is interconnected with these release versions. 

Consider the option to provide functionality to choose between newer versions of the Kendo themes that are released with service packs and patches. This way, the user will have the ability to test versions that contain theme fixes before the next major release.

For example, R2 2023 officially supports Kendo theme 6.4.0, and before R3 2023 is released the Kendo theme is already at version 6.7.0