The 50th Anniversary Edition of Psycho (1960) was one of the first reviews posted on this site. The exact same disc has recently been re-released with the same transfer, supplements, and artwork (minus the 50th Anniversary label). The only difference between the two releases is that the more recent edition comes with an Ultraviolet copy of the film.
There is also a Limited Steelbook Edition of Psycho. This release contains the same transfer and supplements as the previous discs, but will be presented in a steelbook case with new artwork.
For more a detailed review on all three releases: