According to Bloomberg, Apple will organize a Special Event on September 7th to unveil the new iPod Touch, but also the new deeply modified Apple TV (for 99 USD). They should also announce that TV shows and series should be available 0.99 USD on the iTunes Store. The Back to School offer ends on September 7th, adding strength to this information.
[Edit] The date of the event is now set to September 1st, 10:00 AM in Cupertino, 7:00 PM in Paris.
