As stated in the comments for the Majestic Studios (first) version of this figure, the biggest change to it was the addition of the missing chain-mail skirt. That was something that many reviewers had noted as needing to be fixed. Overall these figures were well done, to bad the rest of the line was not released.
There were actually two (2) versions of this figure produced. The major difference I can see is, that on the Amok Time re-release figure, it has the chain-mail skirt piece that was missing on the first (Majestic Studios) release. Other than that, the only other difference I know of is that the box art was changed slightly. From what I've read, there were plenty of flaws in the packaging so this aspect is not a big deal. While these figures are not perfect, they are very nicely done and the prototypes, for the unreleased 2nd wave,that were shown in the 2008 New York Toy Fair made old school fans drool. This line would have been one of the most comprehensive, best detailed, and highest quality production action figures to represent the Original BSG Series, ever! Oh, what could have been.