See http://www.gnome.org/projects/NetworkManager/
What is it?
NetworkManager is a set of co-operative tools that make networking simple and straightforward. Whether WiFi, wired, 3G, or Bluetooth, NetworkManager allows you to quickly move from one network to another: once a network has been configured and joined once, it can be detected and re-joined automatically the next time its available.
Discussion List
http://mail.gnome.org/mailman/listinfo/networkmanager-list
Reporting Bugs
NetworkManager at bugzilla.gnome.org
Documentation
0.7 0.8 - Documentation for NetworkManager's D-Bus interface (useful for developers)
0.7 0.8 - Specification of the Settings objects used to configure connections (useful for applet developers)
NetworkManagerConfiguration - Overview of NetworkManager's configuration design
System Settings - A description of system connections and the various system settings service plugins for each distro
Mobile Broadband - Useful information about NetworkManager's 3G support
Debugging Tips - Some steps to take when things aren't working correctly
Release Process
ReleaseProcess has the most up-to-date to-do list for an upcoming release.
Other Support
NetworkManagerFAQ - Frequently Answered Questions
Distro specific
NetworkManagerGentoo - Gentoo specific quirks and workarounds
NetworkManagerDebian - HOWTO for compiling from subversion under Debian
