The time: September 27, 1997. The place: Madison, Wisconsin. The event: the premiere of a "new" Welles work, a posthumous staging of Bright Lucifer, a play Welles wrote in the mid-1930's. According to the above source, at least, it appears to have been as ahead of its time (thematically, at least) as the rest of the Master's work and its script seems to presage Welles's soon-to-emerge cinematic obsession with visual detail.
Whether the play's failure to date to find a repertory following says anything about its dramatic merits is a matter, I suppose, for those who know the piece to debate. All the same, it might have made for an interesting evening of theatre.