http://wccftech.com/android-8-1-developer-preview-features/

Yesterday, Google released Android 8.1 Developer Preview for the compatible Nexus and Pixel devices. This is the first version of the Developer Preview for Android 8.1, and the final version will start rolling out in December. Users enrolled in the Android Beta Program can test the first preview now. Nexus phones – Nexus 5X and Nexus 6P and Pixel phones – Pixel, Pixel XL, Pixel 2, and Pixel 2 XL are compatible with the preview.

This update comes with some significant enhancements and improvements over the previous Android 8.0 version. There are also some features that have been stripped, such as the option to toggle Wi-Fi when the device is left idle for some time. There are a variety of other changes that make this preview worthy enough to try. Let’s take a quick look at all the features that have debuted with Android 8.1 Developer Preview.