5 days ago - Sleipnir - Direct link
A couple things are planned:
Town Hall - Lets you ring a warning bell to have all the non-militia go to it, and all the militia go to their Guard Posts. It will also provide some leadership stuff, but that's not really related to the alarm stuff.
Guard Post - Where militia stand guard and patrol.

The idea of a safe room is cool. Maybe the town hall could have options to designate these.