Android 9.0 . Almost there!!!

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The final developer preview of Android P(9.0) has been released for google pixel and Esential PH-1. Releasing the final version means that Google is close to finalizing and releasing the fully formed new version of the operating system we love "Android".
Note: It is Developer preview 5(Beta 4).

This Beta update “includes a release candidate build with final system behaviors and the official Android P APIs (API level 28)” meaning that this latest beta preview is almost the complete market version.

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Android 9.0 comes with a new User Interface, multitasking interface and swipe-gestures navigation', adaptive battery feature(more optimal battery life by reducing the priority of background activities of apps not used often).
Smart replies can be seen directly in the notification shade and it Android P opens the feature for third-party apps.

The Beta 4’s build number is PPP5.180610.010.

What do you think the P will stand for??
Drop your guesses....