You can place your pre-Order on your Brand and shiny new iPhone 4 “Officially Unlocked” from apple online stores in the (UK, France & Canada) , All of these sites have a text that says :

Your new iPhone. Direct from Apple and ready to use.

When you purchase your iPhone from the Apple Online Store, you’ll get it SIM-free. So you can sign up for service with the carrier of your choice and change your carrier at any time.

The prices from the UK store are £499 for the 16GB and £599 for the 32GB , they start shipping by July 2nd.