Here is my story for those outhere waiting for an update on their case:
January 2012 - Application Received
March 2013 - Passed Test
May 2013 - RQ submitted
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Absoulute silence while my File was getting dust
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January 2015 - ATIP Received
March 2015 - Case Especific Inquiry
After waiting for 36 months, I finally decided to ask for ATIP last January. ATIP showed absolutely nothing out of the ordinary. Pretty much my File was stored somewhere in a lost cabinet getting dust and only checked by CIC raccoons and squirrels, which probably were crying or laughing at my case.
I strongly believe asking for ATIP helped CIC officials to realize my File was lost in 2012-Forgotten Applicants cabinet. Right after that I filed out CIC Case Specific Form online for those 'non-routine' applications, CIC came back to me to let me know my File was recently submitted to CIC Scarborough office for Oath ceremony schedule.
eCAS hasn't been updated yet. Long story short: get your ATIP and fill the Case Specific Form online once your processing waiting time exceeds the 36 months period.
CIC has left 2011-2012 applications way behind their priorities and right now are giving extra time to process 2014-2015 citizenship applications. My neighbor applied in August 2014 and got his Citizenship in February 2015... niceeeeee !!!!!....