I have to say I'm thankful for the Demo, and while it hasn't put me off pre-ordering, I wouldn't pre-order anyway. Kalypso games have a habit of dropping in price quickly. Also there is this:
http://n4g.com/news/1160157...
which I am not too sure about and more than willing to sit back and watch it play out.
One of the best and most reliable gaming sites on the net. No problems with downloading from there (I'm an Admin on there as well, so I hope that helps).
Had this pre-ordered but after reading that there will be no DX11 features in favour of being more "console-friendly", as a PC gamer I cancelled my pre-order. Better to wait and see what gamers and reviewers think of it, then pick it up on sale if it's worth it.