We talk about a demo every day. We would love to do a demo. There's obviously factors there. If and when we do one, I don't know if it'd be pre-launch or post-launch, because ...there's a lot of factors there.

We would love to promise a demo, we can't quite yet, we just want to get the game done. That's always the hardest thing for developers to do--you never quite know how the time's going to work out. We're doing really well, but I can't promise it.

What happens a lot of the time is you finish your game and it's time for cert, and during cert a lot of bugs crop up that you have to fix, and a lot of them are really, really big bugs. You are certainly not adding any content to the game at all. A level? No way.

But, during cert, if you have a lot of level designers who have nothing to do--which is pretty common, you pull level design and art off first--they're gonna be making cool shit and want to make cool shit. That cool shit, that tends to be what DLC ends up being. It's the stuff we couldn't add to the game because we're making it during cert, which is impossible to get into the [retail] game.

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Via Shacknews