I think the return is 14 days from what i was reading, so that means if it isn't out by monday then I will be to late. If the do release a lower cost iMac by 100$ i don't see how they would add something better...hmm what to do..
If I were you, I would return it while you can and wait for the new ones. The numbers and specs aren't out yet, but at least you'll have the most recent iMac vs something that's been out for 6-7 months.