If you've got Left 4 Dead 2 preordered for the PC, you can now fire up Steam and preload the files getting yourself ready for the zombie slaughter. It all begins on Tuesday, October 27th. We strongly advise pre-loading, that way there's no need to wait for the demo to download on Tuesday.
You don't want to be staring at your friends list, jealous of everyone playing, while you wait for a download to complete...do you? 360 users who preordered also get the demo on the same day, but sadly, there's no pre-loading process.