Currently, subscribing to a forum simply places that forum into your user profile (control panel). So when you go to to your control panel, you see a list of your subscribed forums. This provides a way for members to have short cuts to their favourite forums and sub-forms listed in one place.

The option to be notified about new threads in a specific forums is not yet automated, but can be done manually. Admins can can add emails to each forum for notification. The only draw back to this, is that it won't give you an unsubscribe link, like it does for subscribed threads.

Wa'il