After a 2-3 weeks in that status my salesmen called Toyota Canada to get an answer and they just said it's because the car come from another country lol.
I got news of the "at processing yard" around Sept 10 and it arrived at the dealership on Oct 13.
fyi....from my experience...don't expect a VIN until the car is unloaded at the dealership. The only number I got is the VTN and I couldn't track anything with it on my end.
I've got an update from the dealer on monday for my A91-MT...status is now "At Yard". They mentioned that it should be at the dealer in a few days! I hope that's true ?