For information purposes only. I am in the process of researching this matter. But from what I can see, to all Canadian PRs and Canadian Citizens, although your spouse is not yet in Canada or is in Canada waiting for their PR application to be processed you have to inform CRA (Canada Revenue Agency) of your change of status to married or common-law. CRA website states this has to be done within 30 days of change in status. I have not done so yet as I was not aware that it had to be done right away. Incorrectly I was under the impression that I can just declare at time I will file my 2013 taxes. oops ;D
http://www.howlandtax.com/articles/nonresident-spouse.htm
http://www.howlandtax.com/articles/nonresident-spouse.htm