Surface RT shipping... interesting-ness

I just received my Surface in the mail. Happy day! Although, I actually really surprised: -I have not yet received a shipping notification in my email, and the Microsoft rep I talked to yesterday said it was still in the warehouse. -My credit card ha not been charged, and the "pending" charge that showed up when I pre-ordered the device has disappeared. Have I gotten a free surface? or will I see ANOTHER one coming later? 0.o What are your thoughts