A few weeks ago bioRxiv published two preprints on the Seima-Turbino Phenomenon (see here and here). I can't say much about these manuscripts until I see the relevant ancient DNA samples, and that might take some time. However, for now, I will say that both preprints really need to emphasize the profound impact that the Sintashta-related early Indo-Iranian speakers had on the Seima-Turbino
