Today Google released Android Oreo to Pixel devices running the Android O Beta, however good luck trying to download it. It errors out during the install.
Learn more at http://www.android.com/oreo
Update: Potentially two updates one of 50.5 Mb and another of 900+ MB
900mb+ 2 people have received the larger update after downloading the 50mb
— Nathan🎉 (@VaDoseFlame) August 21, 2017
Update: Google seems to have pulled the update.
Update: As of 8:30 PM EST the update is back and now working.