Status: After discussion with the designers, it seems unlikely that this will happen
Firewalld is being developed to provide a comprehensive userspace API to iptables and similar network filtering technologies in the kernel. As a user-friendly high-level API, it implements network 'zones', which represent predefined firewall configurations. The default set of zones will include things like 'Home', 'Office', 'Untrusted'. It is possible for administrators to define new zones or change the configuration of existing zones.
NetworkManager is getting enhanced to interact with firewalld to assign network connection to zones.
The GNOME networking-related UIs need to gain some awareness of network zones, which is what this feature is about.
Not currently owned
For the firewalld part, Thomas Wörner
For the NetworkManager part, Dan Winship
Affected modules: gnome-control-center (network panel), gnome-shell (network menu)
firewalld is already available in Fedora 16, but the zone APIs are not there yet. The NetworkManager integration is in the planning phase. UI bits have not been started yet, with the exception of firewalld support in the control-center printer panel.
How to Help
Discussion of UI and design could happen on desktop-devel-list or #gnome-design