As you may know, the Fedora developers started work at a new RPM package manager, called DNF, which is a fork of yum, using libsolv. It has been integrated in Fedora 18, but it is still under testing. It should replace yum only when it will be stable enough to do yum’s tasks successfully.

The developers still have to implement the following functions, in order to make DNF a trustworthy package manager.
- Delta RPM
- history undo
- parallel downloads
- auto-remove
- bash completion
DNF has been updated to DNF 0.4.1, which shows progress signs on the Fedora and Red Hat systems. DNF 0.4.1 got improved support for the Anaconda installer and the work for porting it to Python 3 has already started.
For more information, see the changelog.