I said the same thing to her. She was indifferent on speed of delivery vs pick-up, but said that pick-up window at the store is only 3-5pm every day... I said that's fine. I'd rather come down literally the day it arrives on the lot than to wait any longer.
And for a more detailed response of what exactly she said: "it looks like your Model S Long Range could come in this month, but it's no guarantee. Keep an eye on a VIN being assigned in your account, and once that happens we can coordinate your pick-up time at the store."
She then went on to just make sure all my information was correct and that I was ready/willing to pick it up as soon as it comes in.
TOTAL SPECULATION: they have an opportunity to beef up their end of quarter delivery #'s by making sure LR's don't sit in parking lots and go directly to customers who are ready to get them! We're talking days matter if it's already June 16th, so I could see why they're doing these calls.