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.
This file manager also boasts GIO support so that it integrates with the GNOME desktop and can take advantage of GVFS-FUSE.
From the Emperor 0.1 release announcement, "While it is not yet full-featured, it is complete enough to be useful and has good support for network file systems and automatic mounting of archive files. Emperor strives to provide a user interface familiar to users of Total Commander, Krusader, or GNOME Commander."
There's also a basic web-site for this new GNOME Emperor file manager.