iPhone 6s Said to Adopt 7000 Series Apple Watch Aluminum Housing
Apple said to use a stronger, Series 7000 aluminium with the iPhone 6s. This material was used with the Apple Watch Sport.
iPhone 6s Plus
Force Touch Only for iPhone 6s Plus, 4″ iPhone Unlikely in 2015 [Rumour]
Force Touch could be an exclusive feature of the iPhone 6s Plus, claim sources.