Not sure either as not worked there since 2005 when doing security.
This information was directly to GFEL as a member of the Gates Management Team.
I'd hazard as a guess they will be clamping down bit by bit as the years go by.
I went in 2022 and that was the first time since 2011, lots more people and the Thursday was unpleasant in certain areas.
Mostly same layout, few stage changes, the official map should be out soon.