Yes the intellectual rights as well as the name, trademark etc. are now owned by someone other than BDM or Sheldon. As to what that/those parties decide to do with them, well when he/she/they feel the time is right I'm sure everyone here will know.
As for musings about the "reunion", it's kind of like any other organization, there are the have's and the have not's. The have's have the money, ideas, golden knee pads and bald spots on the backs of their heads from bumping them on the underside of the desk. The have not's do all the work, make the golden widget that makes the have's slap each other on the back for what they accomplish. So then comes time for the reunion, there are those that have an invitation and those that have not an invitation. You can figure out the rest.