my apple store already has it in store. For purchase.
I had one but returned it and got an Airport Extreme instead. I was loosing connection all the time and the range was poor with the Time Capsule. Plus it would run very hot since the power supply was built in unlike the AirPort Extreme.
Were you able to "hack" the Airport Extreme to use an external USB drive on the USB port? What is the benefit of an Airport Extreme vs a Netgear or Linksys router?