The latest from the World of Warcraft Forums on the status of BlizzCon 2008 tickets is a post that went up in the wee hours (Eastern time) today in a futile bid to save folks from staying up until the wee hours. So the tomorrow it refers to means later today:

Update: 9:40 PM PDT - We have appreciated everyone’s patience as we've worked to address issues with the BlizzCon ticket sales today. To avoid having people stay up into the early hours attempting to make ticket purchases, we will take ticket sales down and continue implementing optimizations through tonight and tomorrow morning.

There are still plenty of tickets available, so if you weren't able to purchase tickets today, please check back tomorrow. We'll continue to provide updates on the World of Warcraft forums here.