Panasonic Japan announced a new firmware upgrde for the following lenses:
LUMIX G VARIO 7-14mm / F4.0 ASPH. (H-F007014)
LUMIX G FISHEYE 8mm / F3.5 (H-F008)
LUMIX G 14mm / F2.5 ASPH. (H-H014)
LUMIX G VARIO 14-42mm / F3.5-5.6 ASPH. / MEGA O.I.S. (H-FS014042)
LUMIX G VARIO 14-45mm / F3.5-5.6 ASPH. / MEGA O.I.S. (H-FS014045)
LUMIX G VARIO 45-200mm / F4.0-5.6 / MEGA O.I.S. (H-FS045200)
LUMIX G VARIO 100-300mm / F4.0-5.6 / MEGA O.I.S. (H-FS100300)
The update improves the tracking focusing for video recording, the silent auto focus, and the exposure control. The stability of the optical image stabilizer is also enhanced for video recording.
Doanload the firmare at http://panasonic.jp/support/global/cs/dsc/download/fts/index.html (via Slashgear).