The name of the new device - the follow-up to last year's iPhone 6 and 6 Plus - is still to be revealed. The 6s and 6s Plus is a likely candidate, tallying with Apple's usual cycle of a major upgrade in "even" years followed by an "s" model in the folllowing year. But Apple could always break with convention and call it the iPhone 7.
Whatever it's called, it islikely to follow previous iPhones in breaking sales records and making Apple billions of dollars.
The price of new iPhones has gradually crept up over the years, at least since 2010's iPhone 4, the first model to be launched in the UK without an exclusive deal with O2.
The iPhone 4 and 4S cost £499 for the entry-level 16GB version, while the
iPhone 5 and 5s were £529 and the iPhone 6 was £539 with the 6 Plus at £619.
Based on this pattern, we might expect an iPhone 6s 16GB to retail for £539 with potentially a 6s Plus at £619. Some reports suggest that the entry-level model this time will be 32GB, however, which could provide a reason to increase the price. This is despite iOS 9 having a new space-saving feature that installs heavy updates by automatically uninstalling and reinstalling apps.