Note that due to improvements in modularity implementation and dependency resolution, you may encounter errors with older modular repositories such as Fedora 28 if you use them with the upgraded DNF version. Also note that ongoing DNF stack consolidation and a large amount of existing Python code being rewritten into `libdnf` (in {cpp} with SWIG bindings to Python), while the DNF team put an emphasis on preserving compatibility and maintaining an identical user experience, there may be differences and regressions due to the scope and nature of this work.
For full information about DNF 4, see the link:++https://src.fedoraproject.org/rpms/dnf/blob/master/f/dnf.spec#_496++[DNF] and link:++https://src.fedoraproject.org/rpms/libdnf/blob/master/f/libdnf.spec#_250++[libdnf] spec changelogs.
Fedora Scientific Vagrant Box
The Fedora Scientific spin now ships as a [appplication]*Vagrant* box in addition to an ISO image, allowing you to bypass the installation process and run it straight in a virtual machine. See xref:f29@fedora:release-notes:sysadmin/Virtualization.adoc#_fedora_scientific_vagrant_box[the Virtualization section] for details.
New Fedora Workstation installations hide the boot menu by default
See xref:f29@fedora:release-notes:sysadmin/System_Utilities.adoc#_grub_menu_hidden_by_default[System Utilities] for details.