Yes, this is pretty much a mass mailer. IRCC has been issuing ITAs in huge numbers lately and it is not easy to get appointments for IME. Case in point, I received my ITA on April 16th. When I tried to book an appointment on the same day with one of the most famous Centers for IME, the earliest date that I was getting was 6th June. So, don't worry..this is just IRCC being generous with the IME thing.Hope this doesn't delay anything. I don't see any change in my Profile asking to submit IME. Looks like IRCC sent a massmailer