http://www.freespacefaq.com/Misc-Downloads/Builds/TeamChatBuild.7zThe major new feature is the ability to send private messages to players and teams while forming or during mission briefing (or debrief for that matter).
You may now use these commands in the chat box
/f: Send the following message to all friendly players.
/h: Send the following message to all hostile players.
/callsign: Send the message to the player with that callsign.
If you add a / and then don't give one of those commands the server will pop up a message saying that the pilot you asked for doesn't exist. I had considered only doing that if you use /<something>: but that gives you more chance of accidentally missing a colon and sending your secret plan to backstab half your team to everyone.
If people find it annoying I'll make it look for the colon too.
This is a build from my branch of SVN rather than trunk but I updated before building so it should have everything that is currently in SVN. Since this is from my branch that means that this feature probably won't be in 3.6.10. I'll add it soon afterwards though if people test it now. There are other features from older builds but since I've not included a FRED build you can't really use them. I built this on VC2005 so there is no voice synth/recognition.