New System Software updates delay.

Why do some of us (I'm in UK) always have to wait so long for the announced system updates? For instance, the 11.18 update for the Instinct Crossover was announced 7 days ago yet I still can't get it.

Normally the update announcements come along with the statement 'we are curently at 10% with this update....' , or something similar.

Why is there always such a delay? For instance, when Apple release a software update for their systems it is available to all (normally!) as soon as the release date is reached, don't understand why there is always a 'lucky dip' mentality with Garmin!