Release 1.6 is out! Get it from the Cheese Shop.
If you want to install the release with easy_install, you can do it using this command:
Pygments is also part of the Debian and Gentoo Linux distributions, you can install it via the packet manager there.
We're using the Mercurial version control system. You can get the development source using this command:
hg clone http://bitbucket.org/birkenfeld/pygments-main pygments
The latest changes in the development source code are listed in the changelog.
You can download the documentation either as a bunch of rst files from the Mercurial repository, see above, or as a tar.gz containing rendered HTML files: