I think CX wouldn't care and wouldn't compensate you, but I think there isn't a high chance of an equipment swap because they have specially scheduled a different aircraft on a few select days, and they usually don't do last-minute equipment swaps for those, however, anything is possible. I know that Flightradar does not show the registration prior to the DPS flight, but I can update you on the situation if I can, on this thread the morning of your flight. You can also check the timetable a few hours before your flight as that is usually accurate before the flight. Keep an eye on this thread on the morning of the flight, or I can PM you if you want.