I have a really, really tough time believing that they thought it was an '08. Come on, you haven't been able to order DB road bikes for 3 years but you thought that bike was an '08? There's a shop under our office that is really small and as a result has some aging bikes in there, but they know how old they are. I just don't know how anyone could look at a bike for 3 years and forget that's how long it's been around.
As for a warranty I do believe you'd still have one. It's from date of purchase by the consumer usually. If anything happened though I imagine you'd receive a Raleigh as a replacement. Better deal in my book, but if this shop is already being dishonest I imagine they might tell you there's a warranty where there isn't as well.
If it were me, I'd get the Ruby Elite. That's the cute little black and blue one, right? Awesome older gal on my group ride the other day had that bike and she was pleased as punch with it. Components wise they're about the same as the DB you're looking at, but I'd rather have Specialized's in house components than DB's.
If you're still set on it, offer them $600. Worst that can happen is they say no, but if I inventory that old that wasn't moving, and someone was finally interested, I'd cut my losses and sell it.
"True, but if you throw your panties into the middle of the peloton, someone's likely to get hurt."