Well now there seems to be news to revive the rumor as AllThingsD state their sources are reporting that the Apple October event will be happening on the 23rd as an invitation only event. This is only three days in advance of the new Microsoft Surface release.
So far there is no specific information tying the event to a location but it is being speculated to be an “intimate affair held close to home.” There are also few confirmed details about the tablet at all. Some are assuming it will also have the Lightning connector in addition to being smaller in size and thinner. Aside from that, the countdown begins until invitations are released.