In My Moodle the following info prints for each forum:

Forum: News forum
3 posts since last login
6 total unread

seems a bit inconsistent - using "posts" in the first line and "total" in the second

• also the way this is structured makes it hard to theme - (line break instead of div for "total unread" line)

suggested replacement:
Forum: News Forum
6 unread posts (3 since last login)

I plan to submit a patch to at least remove the line break and use a div so that a theme designer can have better control over it.