Nobody knows when the MBP's will be updated - they will happen when they happen.
The 12th September event took place in San Francisco and involved a new release of every single model of Apple's iPod line (you know, the product that generates half of Apple's income?), a new version of iTunes - the most popular music software in the world and the preview of a device that will enable home theatre operation of all iTunes Store content including full-length feature films (admittedly the movies aren't available outside the US). I'd hardly call that a non-event.
The Apple Expo Paris, which started on the same day as the Showtime Apple event was a "non-event" and we knew it would be for ages as Apple had specifically said there would be no Keynote speech there.
Yesterday's event at Photokina ushered in a new, massively improved, version of Aperture - a fitting announcement for the event.
Any updates to the MBP are only rumours at this point. There is not a single person on this board who knows when it's going to happen and you should realise this when reading our posts.