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.