Here is a short list that is due in September / October range:

# Rich Text (WYSIWYG) Editor
Allow members to easily format their posts, signatures and personal messages.
# RSS (Really Simple Syndication) Import
Import RSS content from all over the 'net as new topics in any forum.
# RSS (Really Simple Syndication) Export
Allow others to syndicate content by setting up exclusive RSS export streams from forums.
# Multiple Question Polls
Create new polls in an easy to use interface. Set different questions for multiple question polls.
# Improved Forum and Topic Marking
Forum topic markers are now stored in the database to accurately track all your unread topics regardless of which computer you use to access your account.
# Topic Rating
Allow members to rate each other's topics.