Apple has registered a dozen new model numbers with the Eurasian Economic Commission (EEC) in Russia, including three iPhones. Purportedly, the model numbers could relate to the iPhone SE 3 and the iPad Air 5, both due soon with A15 Bionic SoCs.
https://www.notebookcheck.net/Apple-registers-multiple-model-numbers-with-the-EEC-ahead-of-iPhone-SE-3-and-iPad-Air-5-releases.593667.0.html