Out of Date Source Tarball?

The tarball at http://validator.w3.org/validator.tar.gz doesn't seem to
match what's running on validator.w3.org.  The index.html file on
validator.w3.org looks very different that what's in the tarball.  Based
on the dates imbedded in the pages it looks like the tarball has
index.html version 1.55.2.3 while validator.w3.org has 1.55.2.8.
I'm guessing that there are lots of other differences also.  I'd like to
get the same code, html, and DTDs that are running on validator.w3.org
but I'm not sure how to get them out of CVS.

So, is it possible for someone to update the tarball and the DTDs to
match what's running on validator.w3.org?  If not, how about the CVS
instructions to pull the same versions as on validator.w3.org?

Thanks,
  Norm Proffitt