Can't speak for the 6S, but it is a bit inelegant at the moment on the 6. Here's the best way I've found to approach it on the 6:
- If using the phone as normal, and want a chance to view your notifications first:
- Click the home button and release, to wake up the screen. When done:
- Click the home button and rest your finger there to unlock, or:
- Rest your finger on the home button until the padlock in the status bar disappears. Then click the home button and release (smoother experience, as you bypass "Touch ID or Enter Passcode" screen).
- If wanting to go straight into the phone:
- Click the home button and rest your finger there to unlock, as it has always worked.
I have a feeling this might get changed in later betas, but that's the least frustrating approach to it, for now, I think.