In the past they've definitely been given advance notice of things, whether or not they've made them live yet I'm not sure.
I think it's because it's just the JCVI have only just recommended that the boosters are brought forward, it's still awaiting the Government to take up that recommendation.
I'd only be able to bring mine forward 10 days or so given my blood donation appointment, and my blood donation appointment is more important in the grand scheme of things so I won't be cancelling it just to get the booster a few days earlier.
I know the age drops were live on the website before officially announced but as you say that wasn't a government policy change but an operational how many free slots are available thing.
In the past they've definitely been given advance notice of things, whether or not they've made them live yet I'm not sure.
I think it's because it's just the JCVI have only just recommended that the boosters are brought forward, it's still awaiting the Government to take up that recommendation.
I'd only be able to bring mine forward 10 days or so given my blood donation appointment, and my blood donation appointment is more important in the grand scheme of things so I won't be cancelling it just to get the booster a few days earlier.