It doesn't necessarily mean that we're looking at a November patch-- it could be that the PTR updates are for 2.3, or that 2.2 will drop with hotfixes coming later, or that Hortus just doesn't have the information from the devs right. But take a deep breath-- even if it takes a few more weeks for a new patch, odds are we'd all rather have it "right" than "right now."
And Boubouille says that if it takes this long for 2.2, he doesn't see how they'll release the expansion by next January, which is just plain laughable. Sorry Bou, we love you and all, but WotLK isn't dropping anytime before July 2008, and I wouldn't be surprised at all if we didn't see it until early 2009. It's not that we won't have content until then-- Zul'Aman is coming, and a new arena season will show up before then (maybe even two), as well as guild banks, a new CoT instance, and of course the Sunwell. But if you're still thinking we'll see Arthas as soon as January, time to stop holding your breath.