If this rumor is true, the next iPad Air will be harder to wake up, unlock & get to the home screen than the current one...
With iPad Air 3 (or any other current iOS device with touchID), pressing the home button wakes up the iPad, unlocks it and takes you to the home screen. All in one action (pressing the home button).
With this new iPad Air, you would need to wake up / unlock the device first by pressing / resting your finger on the power button and then swipe up to get to the home screen. That's two distinct actions there.
Apple making usability worse in newer products of the same category makes no sense. I hope this rumor is wrong.