Well, here it is, official word that patch 2.3 is scheduled to go live in North America on November 13th, one week from today. Season 3 is set to start on November 20th, so here's your two-week notice. That means 2.3 will be live for a week before S3 is. The PTR was just updated tonight with a new build containing unknown changes; I guess it must not have required very much testing. Just posted in the official forums by Drysc:

While testing continues and a delay could possibly change these dates, we are currently planning to start Season 3 on November 20 once the realms come back up from their weekly maintenance. This means that Season 2 will come to a close when the realms come down for maintenance on November 20. During that maintenance the final standings are taken and the end of season rewards are distributed.

The start date for Season 3 is purposefully planned to be one week later than the release of patch 2.3, which is currently scheduled for November 13. We will be closely monitoring the testing of the 2.3 patch, and if it looks like it won't make the November 13 date, we will announce a delay.

This confirms earlier news pulled from the WoW Taiwan site. Guess it's time to lay off the alts (at least until Tuesday) and get farming Sporeggar rep.