Gnuastro has a dedicated mailing list for making announcements
info-gnuastro). Anyone can subscribe to this mailing list. Anytime
there is a new stable or test release, an email will be circulated
there. The email contains a summary of the overall changes along with a
detailed list (from the NEWS file). This mailing list is thus the
best way to stay up to date with new releases, easily learn about the
updated/new features, or dependencies (see Dependencies).
To subscribe to this list, please visit https://lists.gnu.org/mailman/listinfo/info-gnuastro. Traffic (number of mails per unit time) in this list is designed to be low: only a handful of mails per year. Previous announcements are available on its archive.