Nexus 5X Android O Features
The public Nexus 5X Android O beta comes with some notable changes including redesigned quick settings (seen in the screenshot here), notification dots, and redesigned app shortcuts.
When you pull down the quick settings from the top of your screen you'll immediately notice the date and settings shortcut icons are now situated below the last row of toggles. You'll also notice a lack of color. The toggles are now white with black text.
Notification dots are new look notifications. You can get a feel for the change here in this demo from Google itself.
The Android O beta also includes some leftovers from the first Developer Preview including Picture in Picture, adaptive icons, new emoji, wide-gamut color for apps, autofill, and improved keyboard navigation.
If you're unfamiliar with Qualcomm's aptX, it provides lower latency than your typical Bluetooth audio streaming.
It's unclear if Google will add support late (like it did when it brought Pixel finger print gestures to the device with Android 7.1.2) or if the device will miss out on the feature.