Right now they are default ordered by last activity. This hides recent announcements, especially if they cannot be replied to. I saw a lot of people wondering where the announcement for downtime is or thinking there isn’t one. It’s just really far down the list in Official News even though one would expect the most recent announcements to be at the top.
It would also be really nice if the announcements were mirrored and stickied to the steam discussions. A lot of people look for information there rather than here.