I sent my application on Feb 26, 2014. It was arrived on March 3, 2014. I called CIC office today and the lady told me that they have started the processing on April 11, 2014 and the acknowledgement and Citizenship Guide have been sent but surprisingly there is no any information online. I also sent my wife and daughter's application on the same date but in a different envelope to avoid taking the risk of being all returned if something was wrong with one application. Their processing started on April 10th, 2014 and I could see their information online.