My app was received Jan. 25. To this date I have received absolutely no correspondence from CPC-M (myself - sponsor nor my partner).
Starting from day 14 after my app was received, I checked everyday to see if I could link my app to MyCIC account. Finally yesterday, exactly 4 weeks (28 days) after my app was signed for, I managed to link my app to my account. I think it was just opened that day because 2 days prior to that, I called the IRCC help line and they told me that my receipt number had not even been entered into the system ie. my file had not even been opened.
Anyways just today, I was also able to start tracking my file on ECAS. At this stage it only says that a background check is in progress. I am pretty sure that I am going to be one of the ones in the 20% group that won't have their applications processed within 12 months, assuming I can make it all the way to the end.
I know some of you are anxious to get an email, but it's possible that they have opened your file and started working on it without sending you an email.
Hope those who are still waiting that soon you'll hear something or can track your file online!