The new iPhones look the same as last year's models on the outside. But changes on the inside matter, from camera improvements to new sensors that enable quicker access to tasks.

I had only about 90 minutes to try out the new Apple products unveiled Wednesday - not enough time, given that Apple Inc. has a larger iPad, a new Apple TV device and new software for the Apple Watch, alongside the new iPhone 6s and iPhone 6s Plus. I wasn't able to test the new iPhone cameras in natural settings, for instance, to say whether pictures are really better with 12 megapixels, instead of 8 megapixels in the previous iPhones.