Here is a direct quote from the Canon site. The plug in is available now for download.
“Canon’s new plug-in software for Final Cut Pro is currently available for FREE download on Canon web sites around the world. Please follow this link to go directly to the Drivers and Downloads area for one of our EOS HD-DSLR cameras to download the plug-in. In the “Drivers/Software Selection” area, be sure to select your operating system form the drop down list, otherwise you may not see the full list of down loadable drivers, software, and firmware options for each camera.”
Click Here To Get More Info From Canon About The Plug In.