my bf is an April applicant and he got his MR January 14th, he got reminder email at the same time. So I think it's way too soon to expect to have MR.
It seems like CIC has been changing around the order the they do things (likely to see what is more efficient) So, I wouldn't look to much at the oder and timing past applications got requests in. Also as different offices process at a different speed its more important to compare time lines with that of the same VO as your own.
It does seem like MR is coming near the end of the process rather than the beginning. This saves people having to redo medical if the application is delayed more than a year. It also seems like the current total processing time is a year (at least for inland applications). I have a feeling this time will decrease as they seem to be catching up on backlogged applications. So if you are an inland application expect to have COPR in just under a year and expect you MR to be about 2 months before you get COPR.