Last supported version of android (Hikey)

I read a few months back AOSP dropped support for the old Hikey 620 platform. I want to make a final version for my board and give it some interesting tasks before retiring it completely. So I want to use the version just before it was removed

However I have not been able to locate the exact version, and rebuild of an android source tree takes too long for me to just try and find it.

Is this really the latest good version: