Announcements are notices from us about Calamus: releases, changes and anything else you should know. They are not correspondence about your account, which arrives by email.
Where they appear
The bell in the Binder is the primary surface and is aware of what you have not yet read, so a new announcement is visible without opening Settings.
The full history
Settings shows a read-only log of every announcement in one list, for reading back through past notices rather than only the current one.