Android P Developer Preview 5 released for Google Pixel phones, the last before launch
Since this could be the last Developer Preview, it would make perfect sense to be the most stable Google released until now. According to Google, this specific build includes final system behaviors and the official Android P APIs, which were available since Beta 2.
Additionally, Android P Developer Preview 5 comes with the latest July security patch and everything that a developer would need to finish test their apps in time for the upcoming official Android P release happening next month.
If you own a Pixel/Pixel 2 smartphone, you can now download the Android P Developer Preview 5 factory images or the OTA (over the air) files, if you haven't yet enrolled in the Android Beta Program to get the update automatically on your handset.
The final Android P beta build should also be available for other smartphones like the Essential Phone, Nokia 6.1, Nokia 7, Nokia 7 Plus, Nokia 8 Sirocco, OnePlus 6, and Sony Xperia XZ2.