Android 9 Pie vs Android 8.0 Oreo Walkthrough: What’s New

Power Menu Screenshot Shortcut

Another change that's similar to the volume controls is when you press and hold down the power button. In Android 9 you'll see options to power off or reboot your device like usual, but there's a new "Screenshot" feature in the power menu. 

Basically, you can press power to take a screenshot, instead of using the odd button combination most Android devices employ today. And when you take a screenshot, there's a brand new "Markup" editor tool. 

On past versions of Android when you take a screenshot you can share it, or delete it from the notification bar. Now, you can edit them on the fly and make changes before you save or share them. Similar to what we've seen on Samsung and other devices.