Hmm. There are people alive today who claim to speak Caucasian Albanian (they number in the 100s and are called Udi). Also random fact: out of this nano-ethnicity, one became a tech executive in the US and is a cofounder of Evernote.

It would be interesting to compare modern Udi with the discovered Caucasian Albanian text to see if there is any resemblance.

https://en.wikipedia.org/wiki/Udi_language