Lost co-creator J.J. Abrams, who temporarily left the series to direct Mission: Impossible III, says that those who took over the show have created an "incredible" season finale, due to air on May 24. In an interview with the New York Post, Abrams said: "The ending of this year in Lost blows the ending of last season out of the water." Abrams gave no hint about how the episode will unfold. "It's not out of the blue," he said, "but what happens at the very end of this year, for me, it's the greatest finale I have ever heard." (Source imdb) I assume they mean 24th of May for US!!!