Europe will have a collector's edition, which will have The Discovery Package and an artbook, not sure how much it will cost though. I checked EB Australia and the price for this Collector's edition is the same as normal versions of most other PS3 games (and they don't have a price for normal version of this game yet). Also I think each retailer in NA can only offer 1 of the 4 packages
According to wikipedia:
"It has been confirmed though, the package will simply unlock the items earlier in the game - the player can still earn these items while playing"
I couldn't find the statement from the source they provided, even if it is truth The Discovery Package is not an item but a new level, so its quite possible pre order/ collector's edition is the only way to get it. ( unless they are kind enough to throw a free DLC after a while to keep the legs going)
