It points to the latest version that Robbbert has.
> If this is the best way to get the source now, John IV may want to link it on the > MameUI home page, instead of the release directory. If Robbbert is using git daily > builds of Mame instead of release builds, then it makes sense to just pull the entire > source from the MameUI repo as you described.
Maybe it is a one time deal. I usually just use the RAR file too.