Yes, an upcoming firmware update will include Canon's 3D Assist Function. That means that two camcorders have to be set up to be able to record 3D HD video. Considering that pricing is around $8,000 and $6,700 for the XF305 (pictured above) and the XF 300 respectively, that's going to get pricey.
The new firmware will bring along support for a few other nifty 3D-friendly features too, including a focal length guide to calibrate zoom settings for each camera and OIS Lens Shift to optically align two of these camcorders when working in 3D mode.
There are a few features that can be utilized without needing to buy a second camcorder. For instance, Relay Recording will save the videographer time as footage will be automatically stored to a second CF card after the first one is filled up. But if you own an Canon XF300-series camcorder and want to make the most of this firmware upgrade, it might be time to fit another video cam into your budget.