Tonight Canon has announced they will be releasing a new firmware on June 2, 2009.



The press release excerpt:





LONDON, UK, 27th May 2009: Canon announced today it will release a
firmware update for the EOS 5D Mark II allowing users to manually
control exposure when shooting video. The new firmware will be
available for download from 2 June 2009 on Canon Europe’s support web
site.

Following the launch of the EOS 5D Mark II in September 2008, Canon’s
Research and Development team has listened closely to customer feedback
to develop additions to the camera’s movie recording functionality.


Allowing EOS 5D Mark II owners to achieve even more stunning video
results with the camera, the firmware update will include the following
manual controls when shooting video:


Full aperture selection

ISO speed: Auto, 100 – 6400 and H1

Shutter speed: 1/30th – 1/4000th second