Android Q Beta 1: Theming has arrived w/ accent colors,
font customization, icon shapes
https://9to5google.com/2019/03/13/android-q-theming-accent-colors-fonts/

How to install the Android Q beta on a Google Pixel
https://www.theverge.com/2019/3/13/18264398/android-q-beta-how-to-install-pixel-2-3-xl

Google’s original Pixel and Pixel XL will be updated to Android Q
https://www.theverge.com/2019/3/13/18264330/android-q-google-pixel-beta-update

Video: Android Q Beta First Look!
https://www.droid-life.com/2019/03/13/video-android-q-beta-first-look/