Anyone who got it exchanged, do you get to keep the old imac until the new one arrives? Don't want to be a week or more without it..
Here in the UK, you have to send it back, before the new one arrives. I bought a BTO MBP last year when the unibodies first came out and a replacement one was a 3-4 week wait. I think you will find that due to demand you will have a wait on your hands.
Where I can I just buy from the Apple store (physical) to avoid all this shipping back and forth and waiting for a replacement, just walk in and get a new one.
I have heard of people being able to keep thier machine till the new one arrived but that was cause Apple messed up big time and the customer service rep was top notch, Good Luck