What colour did you get your iPhone X in... silver? If so, then it would explain why you got it delivered so fast!
I ordered mine on 11th Saturday and I've been informed by a work colleague that I should get it hopefully this week!![]()
I ordered space grey - haven't got it yet, but ordered it 2 days after you. Would love to believe they'll come some time this week, but considering they're still fulfilling orders from the first day of pre-order I find that unlikely.