Android P is officially Android 9.0 Pie, rolling out now
https://newatlas.com/android-9-pie-launch/55775/
Six months after the initial announcement and after several months of beta testing, Android P is finished and has a new name: Android 9.0 Pie. The updated software is rolling out now to Pixel phones, with other handsets in the beta program getting the finalized OS in the next month or two.