Howard Hughes' Estate: What's the Straight Dope now?

In More of the Straight Dope, Cecil answered, for the moment, the question of the disposition of Hughes’ estate. But he said that the various heirs and assigns were, at that writing, still dickering with the IRS over who gets how much. Twelve years have passed, and there has been no mention of the matter in three subsequent Straight Dope books. What’s the deal?

This would be a good question in the General Questions forum. Are you claiming part of the estate?