Yeah you can do that (the best is to go to the link I gave you, and ‘subscribe’ to this sub forum by clicking the bell on top right corner of page, and selecting Watching First Post so you have notification in the forum), or you can install the new application called matray it is still in development as it is recent [APP] - matray - Manjaro announcements tray app (the new one) but it already has many great features and is fairly configurable to get notified of new ISO releases, Twitter news from Manjaro, ANNOUNCEMENTS (that’s what you want to be aware of new update announcements and have a direct link to the forum thread), and other options… Try it if you don’t mind having another app in your system tray.
PS: it is now in the repos so you can install it easily.