Everything New In the Android 8.1 Oreo Developer Preview (theverge.com)

On Wednesday, Google launched the Android 8.1 Developer Preview. The new version of Android is available for Pixel and Nexus devices, and features a number of under-the-hood changes. The new version tests another change to notifications in which apps can only make a notification sound alert once per second. It also contains an Easter egg: the Android Oreo logo now looks like an actual cookie. The Verge reports that 8.1 is eventually supposed to activate the hidden Pixel Visual Core system-on-a-chip, which aims to make image processing smoother and HDR+ available to third-party developers.