STC announced the new grip for the Olympus E-M5III:
STC Announce new Folding Grip [Fogrip] for Olympus OM-D E-M5 Mark III
Innovative imaging designer and manufacturer, STC, has announced a new folding grip solution for the Olympus Olympus OM-D E-M5 Mark III camera, providing greater stability and critical benefit with weight distribution.
STC continues to deliver cutting-edge innovations for photographers and videographers the world over and their latest product announcement has been designed specifically for photographers and filmmakers using Olympus OM-D E-M5 Mark III cameras. The new grip follows quickly from the recent announcement of the STC Fogrip for Olympus OM-D E-M1 Mark III and Olympus OM-D E-M1 Mark II cameras.