The current stable release is luci-0.11. You can checkout the release via SVN with:
svn co http://svn.luci.subsignal.org/luci/branches/luci-0.11
Release source tarballs as well as binary packages will follow.
You can checkout the current working branch with:
svn co http://svn.luci.subsignal.org/luci/trunk
or use the SVN Source Browser