Not the most recent news but apparently Quake Live will be a free standalone game. You can read the announcement here.
QuoteWill there be Mac/Linux support?
We will be unable to support Mac and Linux clients with this transition. While we have reports from our testers that the game works through emulation or virtualization software, we are unable to support native Mac and Linux versions. If you’re using Mac and Linux and have a paid subscription, you will only be able to access the game using emulation or virtualization software.
This part baffles me. You would think that the guys who invented it would know that competitive gamers will never accept running an online game through emulation while the competition can run on a native client. Besides that, seeing Id's history with Linux/Mac support and Valve's upcoming SteamOS, not too mention it's that the engine is known to run well on Linux/Mac, really makes me wonder what's the reasoning behind this.
Quake Live never made Id any money so that shouldn't be it. It's not a smart move for an already small community. Too bad!