Dune 2.4.2 has been
released. You can download the tarballs of checkout the
tag via Git.
Included in the release are the core modules (dune-common, dune-geometry, dune-grid, dune-istl, dune-localfunctions).
Dune 2.4.2 is a bug fix release to keep Dune 2.4 working for recent systems. It is advised to move to Dune 2.5.