No this is normal. The pre-order price guarantee does not apply to electronics. From amazon website:

""Whenever you pre-order a book, CD, video, DVD, video game, or software item....""

In practice customer service usually helps out and adjusts it for you but they don't have to. You can always cancel/reorder before shipment.

I ordered Sept 25 and status changed today to "Shipping Soon" just as I was about the change shipping method.

-Jonan