Same frame but with a brilliant new touchscreen
iPhone 6s review: Pretty on the outside, a beast on the inside
Apple iPhone 6 Review - PhoneArena
Apple iPhone 6s user review: Battery, improved camera make it worth an upgrade
Apple iPhone 6S review: The oldest iPhone can't compete with Apple's newer models - CNET
iPhone 6s: Touching the future [Review]
iPhone 6s Plus Review: The Best S Model Yet
Apple iPhone 6s Plus review: Big, beautiful and still fabulous (but still no bargain deals)
iPhone 6S review: a very good phone ruined by rubbish battery life, Apple
Review: Apple's iPhone 6s + iPhone 6s Plus are nice but definitely not mandatory upgrades [Video] - 9to5Mac
Review: Apple iPhone 6s
Apple iPhone 6s Cell Phone Review - Consumer Reports