Messages Content app (DOCS60) becomes Notifications app in DOCS61 (see MGNLUI-4820) and this will most probably have some influence on "Messages" being renamed to "Notifications", e.g. "Notifications are non-intrusive messages that inform the user whether an action was completed or aborted successfully. Typically they confirm something. Notifications look like Post-IT notes. They go away automatically and don't require user action. " < I guess that's no longer tru after the -4820 gets done.

• https://documentation.magnolia-cms.com/display/DOCS61/Messages+app
• https://documentation.magnolia-cms.com/display/DOCS61/Showing+banner+messages
• https://documentation.magnolia-cms.com/display/DOCS61/Showing+notifications
• https://documentation.magnolia-cms.com/display/DOCS61/Message+types

1. New screenshots.
2. 6.0 / 6.1 banner popups are in new positions - update references in the text.

 Cf. the 6.1 new https://documentation.magnolia-cms.com/display/DOCS61/Notifications+app (= old Pulse)