As it is rumored, Apple is going to release new models of iPhone, iPad and Apple TV on September 9 2015 according to BuzzFeed's John Paczkowski, who has provided reliable information on event dates in the past.
The event's focus will be on the next-generation iPhone 6s and iPhone 6s Plus, both of which will feature a Force Touch display, an A9 processor, an improved camera system, and a faster LTE chip, among other features. Apple may also unveil new iPads at the event, but the 12.9-inch iPad Pro "seems to be a wildcard," says Paczkowski, meaning it could come at the event or at a later date.
Besides, Apple is also expected to unveil the next-generation Apple TV. The Apple TV will be a huge update over its predecessor, featuring an updated A8 processor, a full App Store, a touch-based remote control, and Siri integration. It will, of course, include an entirely revamped body as well.
With Apple unveiling the new iPhones on September 9, pre-orders, if available, are likely to kick off on Friday, September 11. The two devices are then likely to officially launch later in the month, perhaps on September 18. iPads and the Apple TV will probably launch during the same time frame.
Source: Apple to Debut New iPhones, iPads, and Apple TV on September 9