https://www.techradar.com/news/google-sets-down-ground-rules-for-notch-support-on-android-p

In the lead up to the launch of its Pixel 3 smartphone line-up (which allegedly includes a notch-sporting Pixel 3 XL), Google has posted a Developers Blog entry detailing its rules for display cutouts and how they will be supported on its upcoming Android P operating system.

According to Android System UI product manager Megan Potoski, Google's rules for cutouts were drawn up in an effort to ensure that developers' apps would be cutout-ready, asking them to consider such things as how their "content is displayed relative to the cutout."