Google has made the Android O preview images available for compatible devices, namely, the Nexus 5X, Nexus 6P, Nexus Player, Pixel C, Pixel, and Pixel XL. For now, no betas images are available, which means users will have to flash the developer preview onto their phones.
For now, Android O Developer Preview 1 brings background limits, which means apps running in the background will be more strictly controlled resulting into battery life efficiency.last year with Android N, the Android O developer preview has been released early. This developer preview is meant solely for app developers and device makers, and is arguably very buggy at this point.
Android O also brings picture in picture video support, along with a new app overlay window for apps to use instead of system alert window, and multi-display support for launching an activity on a remote display. Support for adaptive icons that change every day, and also support for animated icons, has been added.
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