Better checking of skipped phases avoids running with non-sensical combination.
Depsolver runs in parallel, so each architecture is processed at the same time.
Dracut arguments for installer can be customized.
DNF based depsolver now checks dependencies of debuginfo packages. This change should result in less debuginfo packages being pulled into the compose, since only packages that are really needed should make it in.
New option filter_modules was added to allow excluding some modules. It mimicks the existing filter_packages option.
Runroot tasks for ostree installer can now install arbitrary software.