YD
My house looks out over the Solent and I was planning to fly over the Fleet Review for a bit of a look. I too struggled to find the info initially but was alerted by something on the PFA website.
Given the number of upset people this is going to cause, my guess is that they will delay notaming it for as long as possible (and say 'oh, but it was in the AIC months ago' when anyone complains).
Sometimes it's hard to credit that we live in a democracy! With restrictions like this, the terrorists have to all intents and purposes already won.