Canon has released a firmware update for the EOS 5D Mark II that enables manual control of ISO, aperture and shutter speed while the camera is set to capture video. Firmware v1.1.0 also disables the depth of field preview button when playing back photos or accessing the on-screen menus and corrects various bugs.

More information on firmware v1.10, as well as links to download it, are here. Two PDFs describe how to use the new features: English/French/Spanish or Japanese/English/Chinese.