Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
While not replacing the Nautilus file manager or playing a major role within the soon-to-be-released GNOME 3.2, there is a new GNOME file manager available.
This new GNOME file manager just had its first official release and it's being called the Emperor file manager. The file manager is inspired by Midnight Commander while having a GTK3 interface via Gala.