Here is a link to images and description of the system.

http://www.dvinfo.net/forum/canon-xl-h-series-hdv-camcorders/475124-new-canon-stronger-tripod-plate-nanoflash-wireless-mic-wing-system-now-shipping.html

This is in the Canon XL H forum and I don't want to double post. The system works well on the XH cameras as well.

Here is the site for ordering:
Canon Tripod plate kit (http://www.westsideavstore.com/index.php?p=product&id=8&parent=1)

You can also contact me for any questions and comments:
olof@westsideav.com
603.383.9283.