A few years ago I briefly wrote about the relationship of Basque and Iberian in order to introduce some of the recent research to English readers, since most of the research on the subject is being published in Spanish. I did expand in the comments on that post about the background and quoted (and translated) a few relevant parts from different sources. More recently, I expanded on the origin of these non-Indo-European languages and its implications not just for all of the European prehistorical linguistic landscape, but also how it affects our understanding of the origin of Indo-European languages as a whole.

Now a new paper about the subject has been published, expanding further the hypothesis of these languages (Basque and Iberian) being closely related:

Orduña 2025. La relación entre el vasco y el ibérico: más allá de los numerales. DOI: https://doi.org/10.36707/palaeohispanica.v25i1.69

This new paper by Eduardo Orduña (who first published the research based on the numerals, which was a turning point in the Vasco-Iberismo studies) is also in Spanish, but apart from the abstract in English you can also find a few articles in English that summarise the findings:

New Connections Discovered Between the Ancient Iberian Language and Basque, Beyond Numbers

https://arkeonews.net/one-of-europes-most-mysterious-languages-may-share-ancient-roots-with-iberian/

I’m still hoping to be able to write a new article summarising some of the research published since I wrote my last post about the origin of Indo-European languages and that I could only write briefly about it through the comments sections, so stay tuned for an update.