George S. Ledyard
I picked up a copy of the new translation recently. It was a kick to see a newly discovered manuscript that was older than the ones I studied in school. Sort of like the Taoist Gnostic Gospels... Those were the days, back when I could just sit around all day and read cool stuff like that...
If that's the kind of thing you are interested in, I suggest getting a copy of Harold Roth's translation of the Neiye chapter of the Guanzi. It's called "Original Tao: Inward Training and the Foundations of Taoist Mysticism." The text he translates is the oldest extant Chinese text on internal meditative training, and probably comes from the same lineage of practices that later produced the Daodejing. I highly recommend it to anyone with an interest in archaic Chinese mysticism.