We always (or at least should be) noting what was changed if the update is significant, not just a typo or simple error correction. If it's worth putting an "Updated" tag in the title, there should definitely be an explanation somewhere.
Updates typically go at the bottom, as in this one:
iMessage and FaceTime are acting up for some users, according to Apple's system status page. Some users are "experiencing a problem"...
www.macrumors.com
On occasion, we'll do an inline update, as in this case where it was specific to one section of the post, although I can see how it's a bit buried here (iOS 18.3 section):
iOS 18 was released to the public earlier this month, but the first Apple Intelligence features will not be available until iOS 18.1 is released in...
www.macrumors.com
On rare occasions, we'll add the update at the top. These are usually stories where new information has basically made the entire story incorrect, such as in the case of hoaxes that are later determined to be false or where the main point of the article has otherwise been proven mistaken. We put the update at the top in these cases to make clear that the original article is incorrect and has more or less been retracted so we don't want people reading it all the way to the end before finding that out. Here is one of those cases:
Update: Young has since said under-display Face ID is no longer expected for the iPhone 17 Pro. His previous response was sent in error. Original...
www.macrumors.com
So, in summary...article updates are usually noted at the bottom unless there are specific reasons to put them elsewhere, and those are typically pretty rare. If there are situations where we've labeled a post as Updated but not mentioned what the update is, we should definitely be fixing those.
