Try your luck in store on Friday. Unless you’re going for the 16gb ram spec.I ordered a purple iMac on release day. After seeing the unboxing videos I decided I prefer the green over the purple so I contacted Apple to see if they could swap them out since my delivery isn’t scheduled until late June. They said they couldn’t help me and I’d have to cancel my pre-order and go through the process all over again. So I just ordered a green one that’s coming in July.