https://techcrunch.com/2017/11/14/essential-offers-up-an-android-oreo-beta-for-the-essential-phone/

Android smartphone maker Essential promised that it would be releasing an update to Android 8.0 Oreo for its devices soon, and now there’s a beta version of the update available through its developer portal. This is just a beta, as mentioned, but it’s broadly available for anyone interested enough in the Oreo update to try out pre-release software.

As mentioned, Essential said it would deliver an Oreo update back in September, with a promise that it would arrive sometime “in the next couple months.” Oreo was just released for Pixel phones back in August, and came to the Galaxy S8 and S8+ in beta form earlier this month, which means Essential Phones are among the first smartphones to receive the update.