Freelancer is one of my favourite games, and Discovery is my favourite Freelancer mod. Thought you fine folks might want to take a look at the trailer they've just put out.
Freelancer is effectively abandonware at this point, so… free. It's definitely worth a look, and Discovery is an amazing pick if you're interested in a sci-fi RP server.
Hell yeah! I don't play it very often, but Freelancer gets installed on every (Windows) computer I own. I'll have to check this out.
Can I host my own server of this, or is only the client mod released?
You can host your own server too, although there's a few steps you need to follow to get FLServer working properly. There's instructions on the Discovery forums for that.