Forum - ish layout

Hi, is there any method to have updated listed in a forum-ish layout. Say I have a topic named Windows and I have a 2-3 lines update. Will it be possible to add it with a border and timestamp under the existing content / blog post?

I ask because some topics have very lean 2-3 sentence updates and are not worth a new blog post. Plus it would add context if we continue under the old topic.

Would be great if something like that is possible. Thanks.