You'll obviously get your reserved one and you might get another if you ask as from what I've read there will be an amount for "non reservation walk ins".
Although we've yet to see any official confirmation regarding that, it all just seems to be
"I spoke to someone in the Apple store who told me all iPhones collected on Thursday will be: free/black/pink/not working etc etc"
I'm exaggerating to prove a point, but I'm sure you get my drift....
