http://www.alientrap.org/devwiki/index.php?n=Nexuiz.Pro
Nexuiz Pro is currently being developed for a release in the near future. Like the wiki says, the goal of Nexuiz Pro version is to make a condensed Nexuiz release, focusing on competition style movement, weapons, level design / item placement, deathmatch, and performance speed, and therefor attract the North American pro gaming community.
It will be a seperate download, but most of the changes will be done to the main Nexuiz SVN as just options (such as the trick jumps).
Any thoughts?