I have some doubts too, but I'd say I'm maybe leaning more towards a rollout starting, anyway.
IIRC, the previous announcement/status suggested that the combined G.INP and XdB trial might not have happened, but the G.INP trial has progressed right up to the freeze.
The good news, then, is that nothing catastrophic has happened to cause a rollback.
Analysing the outcome of the pilot will be ECI's next opportunity to show BT that their QA can be trusted. My guess will be that they don't then jump into an immediate rollout. That it'll be staged, and monitored. I doubt the freeze lasts until March, but I'd expect us to next hear about progress then.