This weekend Shattered Horizon will be free on Steam to try out. They are also releasing their new content pack "Moonrise". With the addition of voice, this game should make a good showing this time around. They also fixed a few crucial bugs.
I will even get our server running for this. This is one my favorite new fps and I think it has a lot of potential. It's not exactly your standard fps though. Be aware that this game is built for DirectX 10 and Vista/Windows 7 only.
If you're interested, let's get together via TeamSpeak and organize.