Panasonic has announced upcoming firmware updates for its Lumix G X Vario 12-35mm f/2.8 Power O.I.S. and 35-100mm f/2.8 Power O.I.S. Micro Four Thirds lenses. The firmware upgrade will enhance auto focus performance on the Panasonic GH3, with the camera set to 240fps recording. You will be able to download the updates in the middle of December, 2012.