iPhone 4 early upgrade eligibility was 6 months early, right? Like you can upgrade up to 6 months before you can upgrade without paying an ETF. I think I remember that from the keynote.
Either way, if you bought an iPhone on launch date, you can upgrade to the new iPhone without any ETF once it launches in a year. So I'm guessing the 6 months early upgrade means you can upgrade to the new iPhone after buying a current iPhone in 6 months.
But I'm not sure if I'm misinterpreting this or not.
6 months means that if you are eligible from the time the iPhone is released until those 6 months, you can get it at 199/299. For example, if the iPhone comes out in october and your upgrade is in may, you can't upgrade at 199/299 because thats 7 months away. But, if your eligibility date is within October to April, you can get it at 199/299.