Panasonic has announced upcoming firmware updates for the Lumix GX1 and G VARIO 100-300mm / F4.0-5.6 / MEGA O.I.S. lens. The GX1 firmware update shall improve AWB performance, enhance the performance of the AF-F and AF-C focus modes, improve operational stability with UHS-I compliant memory cards, add Step Zoom and Zoom Speed to the options selectable via the Fn button and the Q menu, and more. The firmware update for the lens will improve the performance of the optical image stabiliser. The firmware updates will be available in the end of January at Panasonic’s Customer Support Site.