I just talked to Canvas about the issue of students seeing two timestamps in a delayed course announcement. The first being the stamp when the announcement was created, and the second "Edited" timestamp showing when the announcement was released.

Canvas Support says that with this new version there is no way to hide the first date, aka. the "created" date from the students. This change does away with the entire point of delaying the announcement in the first place, since students can see when the announcement was created. I am not sure why the coders decided to code an announcement release as an edited action, rather than part of the original action of creating an announcement, and Canvas Support agreed that it was an odd choice on their part.

Canvas Support suggested that we encourage as many teachers as possible to use this platform to request this to change in future updates.