You should be able to cancel and it should list cancel items in blue - I think. However, if you have been known to cancel orders, you may have to call.I just ordered mine today 10/8 and it says delivery between 11/7-11/14. I hope it arrives earlier.
Do you guys know why I can't cancel the order at Apple online anymore? Not that I want to do it but it says "processing" but the shipping date is still far out. Apple should imho allow me to cancel.
If you have the email, it should have a link to see complete order details. At the bottom it should have cancel items.