The goal of the project is to ensure comprehensive coverage of all 24 official EU languages. We are, of course, aware that Europe’s linguistic diversity goes far beyond the official list, but in many cases, it is difficult to find sufficient high-quality data and to preprocess it consistently across so many smaller or regional languages.
That said, Catalan is supported by the model. Even though it is not one of the EU’s official languages, we made a specific effort to include Catalan data, as you can see in the list of supported languages.