I have got a response to my email about PCP79. The news isn't great unfortunately:
I can advise that the upgrade to your cabinet, pcp79, is still in progress, there was a delay due to there being high cost involved, however it is still in the programme to be deployed. At present we are waiting SSE who supply the power to come back to us, once we have received the information from them then we will be able to move forward with deploying cab 79.
I am afraid I cannot provide a date for this...
Make of that what you will, but I am personally not expecting it any time soon. Although at least it's still on the cards.