Only one way to find out.
I have just posted an event in the calender for June 30th 2012. It prompts you to make a post in one of the existing boards, where full details can be given.
On posting the event is also entered into the calendar, with a link from there to the details posting.
Try looking at the calendar for June 30th 2012 and you'll see what I mean.
Well spotted - this looks like a really useful forum feature which is just not used. What a shame!