New month, new Essential Phone Oreo beta.
Essential today released Oreo Beta 3 for the Essential Phone. If you've got the previous beta release installed, you should get an 106.5MB update over the air. If you haven't yet installed the Oreo Beta on your Essential Phone, you can do so right here.
As for what's included with this update, Oreo Beta 3 includes the January 2018 security patches, complete with fixes for the Spectre and Meltdown security vulnerabilities. Essential says that there are miscellaneous stability and bug fixes in there, too.
Essential says that it's "very close" to a full release of Android Oreo for the Essential Phone, so if you don't want to install beta software on your device, you shouldn't have much longer to wait before you get to taste Oreo, too.