You can upgrade to the CE at any time. If you haven't entered your product key for the standard edition, you can cancel or return your order. If you have entered your product key, then you will still be able to enter the product key for your CE as well, but you will "lose" the money you spent on you SE. Stephen Reid has, however, said that the 30 days of "free" game time does "stack", so you're really only out $45 for your SE, not $60. BTW, product key =/= pre-order code. I'm talking about the actual CD Key/Game Code you get in your box or in an email from Origin, if you ordered the digital version.