As far as I’m pursuing this, it’s not. We use Fairphone 5 devices at my workplace. We’re still waiting for a reply about the last delay, FP support is as many know not reachable. But we did get a reply from our account manager of our telecom provider, they say they have no influence on software update releases on smartphones, including Fairphone. I got the same reply in the past from the regular customer support.
I think these are Fairphone internal tests for telecom provider compatibility. As we’ve seen in the past as well, Fairphone has control over this process (when for example this test pipeline was stuck).
By the way, I’m also still waiting for this update, again.