Although September 21st has come and gone here's a promotional teaser released a little bit ago.
* Edit * - Despite the last news article turning into a bunch of upset comments about the lack of Prepar3D v4, no one saw the joke in my previous remark and several people who have already commented got upset. So the original comment has been edited. We're all just as excited as you are for this upcoming release, no need to make a mountain out of mole hill. - Jason