So I did a bit of research again and found the link to the ingredient listing for the Burger King restaurants in Canada posted as of today March 20 2013.
Find the information for yourself here at this link :
Or you can surf their website at burgerking.ca
Note that right at the end of the long PDF file there is a list of the shortforms or abbreviations representing the different allergens that are present in each menu item. Note also their disclaimers and warnings. Seeking out gluten free foods is a bit of a science and research project, and each individual needs to seek out proper medical advice to figure out what is a healthy and practical approach. God bless y'all and enjoy this day that the Lord has made.