Splash Damage and id Software have released an updated version of the Linux client for Enemy Territory: Quake Wars. It adds voice-over-IP functionality as well as a threaded renderer among many other things.

Enemy Territory: Quake Wars v1.2 r5 Client for Linux (Lite) (18.5MB)

Enemy Territory: Quake Wars v1.2 r5 Client for Linux (Full) (272.88MB)