3.0.6 is a generic bugfix release.
See the full list of changes.
Source code is available in the usual place. Compiled Windows packages aren't available yet, but should follow shortly; we'll post again here when they turn up.
Stable release 3.0.6
Re: Stable release 3.0.6
Windows packages now available.
Re: Stable release 3.0.6
Also gtk3.22-client flatpak: https://flathub.org/apps/details/org.freeciv.gtk322