We're getting multiple reports that Blizzard has shipped Wrath of the Lich King out to stores -- one of our readers in Australia ordered the CE and actually got his edition shipped to him already (the game will install, but won't run yet), a few Gamestops around the country have confirmed that they have copies in store (though not for sale yet), and a few people have told us that they've already picked up their copies at 7-11 (notorious for suddenly selling games, and then very recently selling them early).
So odds are that you might be able to grab the game early from stores that are breaking the street date, but it does appear that Blizzard hasn't actually flipped the switch on the expansion, and likely won't do it until tomorrow evening. We'll keep an eye out for more places Wrath may have already popped up.
Update: Thanks to one of our readers for sending along the pic of his Wrath box and the receipt above. The game is indeed shipped and being sold, though Blizzard is saying Northrend won't be available until Wednesday evening. Another reader picture of a purchased game after the break.
Are you ready for the challenges that await you in Northrend? WoW Insider has you covered with our 8-day guide to Preparing for Wrath. Also, check out our feature on AddOns new, old and outdated and Essential AddOns for Wrath written especially with the expansion in mind.