You can track it via this website:
http://expo.expeditors.com
Enter the delivery reference number. Mine left Seoul (ICN) on a Korean Airlines flight to Heathrow today, so should get it delivered in London on Monday!
Wow, according to this it says my package arrived Amsterdam on the 16th. Apple said it was shipped on the 15th but need to be merged. How come I still have info from apple about delivery on the 28th? That is a lot of days from Amsterdam to Stockholm (12 to be exact).
Strange thing though. It says I have three items, I only ordered the MBA and a time capsule.