Google and Essential just dropped the final Android P Developer Preview today. The files are available for the Google Pixel, Google Pixel XL, Google Pixel 2, Google Pixel 2 XL, and Essential PH-1. Android P Deveploper Preview 5 (Beta 4) is now available and including July's security patch.
This is the final Android P Developer Preview before we get final Android P in August and should be the most stable of all the beta's this far. It is labeled as a release candidate and includes final APIs and system behaviors. It’s stable enough that Google didn't list any general advisories we should be aware of. If you’ve been holding off from flashing or joining the beta now is the time to give it a shot. You can grab the factory images and OTAs at the source links below.
Source: Google Pixel factory image's, Google Pixel OTAs, Android P Beta for Essential PH-1