It's already there, hover over the "album.pl V6.2" at the bottom (or click on it) and you'll see the release name, something like arquebus [5].
So each sub release gets assigned a word, and each word then has a numerical counter. The most current release then is V6.2.Moribund.9 if you want to view it in a different way.
I probably need to revisit the whole number versioning process...