Calamares 2.4 adds support for reusing a certain Home (/home) disk partition if available in the /etc/fstab file of an existing OS, revamp of the locale module to support new timezones and languages, as well as better installation of a bootloader on UEFI systems that have an EFI partition.
Moreover, Calamares 2.4 adds a new module called netinstall to allow the choice of installing various packages during installation, implements support for using a mounted loop device as the source for unpackfs operations, and improves multiple configuration files and the handling of partition colors for logical partitions.