Pre-ordered mine at around March, and today I just received an e-mail from the official Sony store that my Z2 is available for pickup!:
"We would like to inform you the Xperia Z2 that you have placed the Pre Order is ready for collection.
Kindly bring along the receipt for collection."
So excited to get the Z2, though now I have to go to Singapore to pick it up. Not only that but I will receive my smartband and magnetic dock charger!