Android P Beta is available now for some devices

Google has released the Android P Beta yesterday to many supported devices. There are also many updates,improvements and new features.
The company made a support page that lists all devices and the individual links to their Beta download, a shortcut used for reporting issues and a support page for that device.
Currently, devices that support Android P Beta are the Google Pixel and Pixel XL, the Google Pixel 2 and 2 XL, the Essential Phone, the Nokia 7 Plus, Oppo R15 Pro, Sony Xperia XZ2, vivo X21 and X21UD, and the Xiaomi Mi Mix 2S. Thanks to Project Treble these devices are the first ones to check out the Android P.

The Android P Beta should be stable, but of course some bugs and malfunctions can be expected. So, using it daily as a main device is not recommended.

Source (gsmarena.com)