"Keep your eyes peeled for Burning Crusade, due for release sometime in December."
The preview has been up for about a week now, and I read it, but I didn't notice that line. I know it is absolutely nothing official, or even something that is credible, BUT, the guys who wrote this article were invited by Blizzard to preview the expansion. Maybe they know something that the rank and file Internet junkies don't. Maybe Blizzard let it slip about December, and maybe, just maybe, the guys at bit-tech.net let it slip on their site.
Wow. That's a lot of maybes. But I thought it was kind of interesting, so I thought I'd throw it out to you guys to debunk, argue and charm us all with your comments. You'll find the December line at end of the third page of their preview.