If like me, people keep looking at the forums during the day, clicking on 'new' to see what has been added or updated. theis could make thinhgs easier to keep up to date. I could see the RSS feed providing on a users desktop; (Platform independant of course, with an appropiate news reader) a stream of data that is periodically refreshed that provides links to the originating page. So a user can be kept abreast of whats happening on the forums without the need to keep clicking 'new'.
This could also be spiced up wth world news, events and calendar entries etc.
Here is a mock up I put together, using my Miranda IM to read the RSS feed.
Clicking on any of these popups will launch your browser and direct you to the appropiate forum page. Of course there are lots of RSS news readers available: Mozilla has an extension that works quite well.