Here's my timeline, and I can see my eCas online :
We received your application for Canadian citizenship (grant of citizenship) on Sept 22, 2014.
We sent you a letter acknowledging receipt of your application(s), and a study book called Discover Canada on Sept 22, 2014. Please consider delays in mail delivery before contacting us.
We started processing your application on Nov 22, 2014.
received line disappear on Dec 05, and after that, nothing happen
and I haven't receive any AOR letter either from email or regular mail, is that normal ? shall I call CIC ?