Faceoff released an update for the Poser plugin for Octane: build 3.08.2.88. Apart from updating it with the latest Octane release (3.08.2) it also added support for 4K screens and corrected a bug with normal maps. Version 3.08 is a must have update for Octane. New features include Metal/Roughness work flow with Metalic Material, Anisotropy, OSL textures and baking support.
The updated plugin can be found here for licensed customers.
Octane version 4 is making steady progress, but I think release is still some months away.