Just to add: I had iPhone 7s delivered by DHL. I never got a text from DHL, only Apple.
Additionally, no matter what courier it is, Apple texts you with the delivery info, not the carrier. The exception is DPD which send you a text on the morning of delivery too, however even that is only after Apple has texted you.
Further, far more than just that one guy would have got a notification by now.
This happens to everyone - they think they haven't ordered something and have a mystery package, only to pick it up and have a disappointing moment when you realise it was just something you had forgotten about.
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Actually, in fairness to
@Jaekae, the store was 3-4 weeks from the moment it went up for stock models, and 2-3 weeks for BTO in the UK. I thought there might have been some bug going on, too.