Does any airline do these type of notifications as a matter of course?
(This is an honest question, not a snark.)
I've been changed on many carriers - all fare classes except F - and never have received notification.
Which is why I'm checking the reservation monthly, weekly, and daily as the departure date approaches. I just take it as part of the deal.
But I love to do business with more proactively customer oriented operations. If such exist.