Many users push the home button to wake up the phone to see if there are any notifications on the lock screen. TouchID is so fast on the iPhone 6S that by the time you push the home button it takes you straight to the home page and you don't even see the lock screen. This is why Apple added this feature.
I understand why Apple decided to ditch "slide to unlock" and replace it with a lot of pressing. But it just makes no sense if people "blow past their lock screen notifications" like how is the lock screen even crucial for these notifications when Apple created the NOTIFICATION CENTER . It just doesn't make any sense. It is a LOCK SCREEN and not a centralized Notification Center. That is why Apple has a NOTIFICATION CENTER. I think Apple wants to force us to enjoy their gimmicks when current lock screen actions actually expose your privacy and security. I still prefer Slide To Unlock.
Go to this thread and see this concept, I personally think it's the best way for Apple to implement Slide To Unlock in iOS 10: https://forums.macrumors.com/thread...rn-of-slide-to-unlock-design-concept.1983135/