San Francisco’s Bill Graham Civic Auditorium has been booked for a private event until September 13th. The auditorium has a seating capacity of 7000. New iPhones are usually announced in September every year. Keeping this in mind, we can expect new iPhones on 9th September.
Source : Apple.com
Apple is expected to introduce Force Touch to iPhone. Force Touch is a technology launched with Apple Watch which differentiates a tap from a hard touch. iPhone 6s is also rumoured to have a better camera and 2 GB RAM.