Try the following links

http://canadiansinqatar.com/index.php?option=com_content&view=article&id...

or

http://canadiansinqatar.com/index.php?option=com_contact&view=category&c...

Maybe they can help you on an update. Also, recently there was a discussion here in QL in which a non confirmed source said that the embassy would be officially registered by July 19th, 2009.

No more updates so far.

Regards!!