Quake Zero Clarification

Quake Zero not actually in web-browser on Eurogamer clarifies that Quake Zero, id's newly announced experimental project, will not actually run in a web browser. Though the game will be launched from a browser, this will apparently just be a front-end, and the application will (thankfully) not be written in Flash or Java or their ilk. Here's the semi-clear explanation from id's Steve Nix:
It's modified to have a front-end in a web-browser where you launch the game. And they've already done a lot of the architectural work - the way the game loads - where it's primarily just shifting the file structures and everything, but the game loads very very quickly, so basically you've never played it on a given machine, you can go to the web-browser, click 'play' and almost instantly get into a game.

Though it is loading to your machine in the background, there's not going to be a lot of wait time or an install process and everything.