One more thought on this topic - didn't OOTP once offer the prior version for free when you bought the new version? I may be getting OOTP mixed up with another game, though I don't think so as I have played very few PC games and almost none that have a lengthy preorder period. If they used to do it, wonder why they stopped?
Give me OOTP 9 with my OOTP 10 preorder. What's the harm? My credit card is ready to go. Seriously.