Pre-loading has begun! The demo will show up as "Left 4 Dead Demo" in your "Not Installed" tab. To preload, simply right click it, and press "Pre-load Information". It says it'll be released at 7AM Pacific Standard Time, and I'm afraid that's 22:00 in the evening for us Europeans. It preloads at 1.2MB/s for me, so I suppose it isn't really busy yet. So, start pre-loading, and be ready for some zombie shooting tonight! Good luck!