This morning's announcement on the B1 is another example of Profoto's intent to simply NEVER stand still and it's just one of many new additions coming in 2014.
The TTL metering is made possible with Profoto’s patent-pending AirTTL system. Already at launch Profoto promised to continuously upgrade the AirTTL system. One of the most frequently requested features is TTL metering with Canon's flagship model: the Canon EOS-1D X. Today, this feature is made available free of charge through an easily installed firmware upgrade. But note that it is not the B1 off-camera flash itself that needs to be upgraded; it is the small radio transmitter that is mounted on the Canon camera’s hot shoe: the Air Remote TTL-C.
The complete announcement, including the process for installing the upgrade, is just a click away!