Amazon's pre-order price guarantee:
Amazon.com's price for not-yet-released items sometimes changes between the time the item is listed for sale and the time it is released and shipped. Whenever you pre-order a book, CD, video, DVD, video game, or software item, the price we charge when we ship it to you will be the lowest price offered by Amazon.com between the time you place your order and the release date. The order summary in Your Account will reflect the lowest price within 24 hours of the price change.

Don't fret about the price hike Amazon pre-orderers! We'll all get it for $560 - $50 rebate