Android 8.0 Oreo is installed on barely 1 percent of Android devices around the globe, but Google is already well along in development of its successor. That means that if Google is planning a fifth developer preview for late July, we could see the final Android P release sometime in August or September. There are factory images for the Google Pixel, Google Pixel XL, Google Pixel 2, and Google Pixel 2 XL, and you can sideload them right now. (As some commenters noted, it also looks basically like the Patreon logo.) As you scroll up and down, the colors change and the P gets bigger and smaller in a funhouse-like effect. Perhaps the most notable is official support for displays with a notch.
A new multi-camera API has been introduced, allowing you stream video footage from two or more cameras at once on an Android P device. Those without a Pixel device can use the Android emulator to test their Android apps. Additionally, messaging apps can now show images in notifications, save replies as drafts when the notification is closed, and use suggested replies like the full messaging app.
Google hasn't said when Android P will be released to the public or what dessert it might choose to represent the "P" release. Before then, we'll get five developer previews. Google hasn't really detailed the consumer-facing new features of Android P just yet.