As you can see, the message is quite confusing. It sounds like they are working on AI improvements in their Android ROMs. There is a brief display of an Android phone that shows FREE where carrier name appears. It is unlikely that CyanogenMod would launch their own MVNO in the US market named Free. I guess we would find out soon enough!
One belief is that the name is given to the brand new privacy features that blocks transmission of personal information unless it is explicitly approved by the user.