I am begging @MastodonEngineering to attach a notice to their announcements about Mastodon (the server software) upgrades, saying that the post is targeted at instance admins, and that regular users don't have to do anything.
In the replies for every release announcement you always find someone who (rightfully) assumes that the post is referring to the client application and asks for guidance on how to upgrade it...
Engineers, stop assuming that everyone is on the same page as you and has the same knowledge about something as you (and I say this as someone who is also guilty of this)!