And it looks like he's has more features he's adding ...

Features
1. Particle support
2. IPv6
3. Server heartbeat/server browser
4. Single port server
5. Alpha masked models support
6. Quake C extensions/extension system
7. Sends ProQuake angles to ProQuake servers
8. Decals (99% certain)
9. Other features in the readme
Very, very basic and low resolution example of weather effects possible

Screenshots posted by Sock helping Spike fine-tune things ....