In the case of updates if users can keep track of version numbers, with the aid of the version in rack, I can reasonably assume, if a thread is titled so the post will look new for previous visitors. If a user posts in the thread it is automatically watching or tracking the thread, it should jump to the most recent post in the thread, if they don’t visit the thread in a long time they should still see the top/first post has been edited. Perhaps incremental versioning for videos/music might be worth a look also.
There is also filtering which can be applied to users posts in a thread (click on username filter posts, Y shape) if there is many threads you’ll loose this functionality, perhaps announcement threads could have an option to filter by original post when a user opens or edit’s the thread to stop the clutter of comments in the thread or as previously requested for music have special tags for versions in a thread which could be toggled by the OP. If announcements was in the one spot perhaps also it might be good to have the edit arrows at the top post, instead of partially hidden in the pencil icon for posts.
You can filter from search also @name #uncategorized in the search box.
Possibly this info could be documented in the forum FAQ’s for newer users to the forum. Which I can safely say there will be many once v1 is released!
I requested on GitHub to have a changelog included in racks context menu for a plugin/module perhaps this could link to announcement threads on here instead of the original request to be on GitHub, it promotes the forum and gives easier access to documentation for a given vendor. It just opens a link when clicked from racks context menu so there is a few reasons to keep announcements in the one spot. The clutter of threads on forums is much worse than a clutter of posts in a thread in my opinion, at least if you want to you can ignore the one thread or filter the users posts in a thread, if it is many threads its a little bit harder to find your favourite poster or easier if they have many threads which ever way you look at it.