I guess many of us were waiting for this: the possibility to use Sigma's excellent…
Canon EOS 5D Mark III Firmware Update Set To Be Released April 30
The firmware update for the Canon EOS 5D Mark III (price & specs), announced last year, will most probably be available April 30. Canon updated their product page, click overview and you’ll see that the last line states:
A firmware update for EOS 5D Mark III is scheduled to be available on April 30, 2013. Please click here to learn more.
The firmware update will provide clean HDMI output and center focusing up to f/8.
Canon EOS 5D Mark III price check: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA [via CR]