It appears to be mostly a clarification of his previous argument that information is retained in the [incomprehensibly small fluctuations of the] geometry of the event horizon.
I'm guessing people are taking it seriously, but as it's not a complete theory of the dynamics it's hard to say "solved" in reference to this development.
http://arxiv.org/pdf/1401.5761.pdf
I'm guessing people are taking it seriously, but as it's not a complete theory of the dynamics it's hard to say "solved" in reference to this development.