In January Family Search offered a brief free glimpse at this census on their pilot website. It was pulled after a few days due to contractual agreements but will return for free searching at a later date (rumoured to be Dec 2011).
This census year is also available on microfilm and can be borrowed at local Canadian libraries and/or LDS Family History Centres worldwide. Microfilm numbers are listed at Library & Archives Canada
Other online national census records:
All but the 1881 census are also available to Ancestry subscribers