New Lightroom update 4.2 adds support for the G5 and LX7
Adobe just added RAW support for the Panasonic G5, LX7 and FZ200. While the new update also supports the new Sony NEX and Fuji X cameras there is no support yet for the new Olympus PEN and Panaosnic GH3. Anyway, here are the links to the downloads:
Adobe released Lightroom 4.2: Mac update (Click here), Windows update (Click here)
Camera Raw 7.2 and DNG converter 7.2: Mac update (Click here), Windows update (Click here)