recently developers of
YaBB SE finally announce opening of their new site which is dedicated to new discussion board software called
Simple Machnies Forum which is written using new code and go away from YaBB engine. Now SMF isn't yet avaiable for downloading since they actively work on it but it's running and folks out there looking for features to include into new build so everyone could have a board of the dream. It will be GPL as previously but also will have paid support in addition to free one. So if you wish to get a board which have all popular features of other forum software and some new features not avaiable yet come to their forums and participate there.
http://www.simplemachines.org/
Don't know but I always like mentality of YaBB developers as it similar to mine and I really belive that this board could change things on forums market... do you think the same?