Hi Babi22 below is my timeline
We received your application for Canadian citizenship (grant of citizenship) on April 13, 2015.
We sent you correspondence acknowledging receipt of your application(s), and a study book called Discover Canada on April 28, 2015.
We started processing your application on June 29, 2015.
We sent you a notice on August 12, 2015 to appear and write the citizenship test on September 1, 2015 at 8:15 AM. The notice you will receive by mail will be your official confirmation of your appointment. If you have not received this notice prior to the date of your scheduled appointment, please contact us.
We sent you a notice on November 24, 2015 to appear and take the oath of citizenship at the citizenship ceremony to be held on December 10, 2015 The notice you will receive will be your official confirmation of your appointment. If you have not received this notice prior to the date of your scheduled appointment, please contact us.