Yep. I was in Gamestop earlier and he said they were opening early to take Pre orders. There are only a limited amount per store and $100 down payment. That's why I went with Amazon.
Amazon.co.uk are taking pre-orders too. What's interesting is they're pricing the PS4 at £349. Yet, the PS4 was branded at $399 which is approximately £250. I wonder why we're being charged an additional £100? *sigh*
EDIT: But luckily you pay the lowest price, so we'll see...