Would your sister know an exact date of arrival?
I will ask her tomorrow. I've not had much contact this week as they are all hectic after returning from WDW.
Arrival at your dealer will not be the same as arrival at Ducati UK however. There is every chance they have 821's there now as they need to prep bikes for journalists to ride around the circuit next door.
Her bike won't technically be 'hers' it will be a press demo bike but it's kind of known in the office that as they need her to ride for her job and the Monster is her preferred bike, then she gets first dibs on one for a year
I think you can see her previous bike in the background of this pic, next to the Panigale R.
Hard to tell from this pic but there will rarely be less than 30 new model Ducatis in there and anyone who works there can take one home. Best trick is drive in Friday morning, leave early on the bike of your choice and have a great weekend at home before riding back on Monday. Yea, I'm very envious.