Well, it finally looks like we might have a release date on the expansion (yay!). The entire front page of WoWHead.com has this lovely date on it:
Play.com and Amazon.co.uk have it listed as the 4th of November, so these dates seem to me to be pretty good to rely on. The PTRs of 3.0.4 are up (patching now), so 3/4 weeks or so of testing and then actaully implementing the patch live seems to fit into this scale and definately realistic. Let’s wait to hear the news from the Horse’s mouth, but until then, I reckon these dates are pretty safe to be excited about.