You wont get it, preorder and prepurchase is different... prepurchase would be sent to you via post or email(if bought from a digital distributor like green man gaming or ncsoft directly),pre purchase requires you to fork up the cash immediately hence different from preorder and it caught me off guard as i was only putting a preorder with amazon but didnt notice the difference . As its a preorder you get one day early access to the retail release but nothing else.
After playing for a bit im impressed with the quality so far, wasnt expecting it to be amazing tbh, however the performance has peed me off its hurting to say the least... 30FPS on low with a gtx460 and an i5 2500k @4ghz, my system isnt that strong but its no slouch either, the graphics are up there with mmorpgs but i would like better, and at the current level of performance it should be crysis graphics!. Hopefully that gets fixed soon though as its only a beta .