It is a complete waste of time, especially if you have an older model that works fine. If you already have the iPhone 4 or 5, you are wasting time to get the 6 version (not to mention, money). If your phone is not working despite installing the latest software or is not compatible with today's software and you cannot load the latest software for memory or other hardware issues, it makes more sense to wait until the iPhone 6 is available without a line (and probably without the bugs that most new products carry).
This is similar to what we were supposed to do as jokehovians when the hotel rooms were first listed. That night, there was a mad rush for the phones to call only to find all hotel rooms are full. You just wasted a good chunk of the night and probably the equivalent of a couple of silver quarters on long distance tolls, only to not find a room. If you simply dog it at that time, they will hound you for putting it off. I used to dog it in January, because every year there would be another list posted without fanfare in early April. At which time, I would call. One call, one long distance charge, one ten-minute session, and done. The rooms are no worse than the bedbug motels offered in late December or early January when you are to jam the phone lines, wasting time on busy signals and "No vacancy" messages (not to mention your phone bill).
This also goes for the latest of most things technology. My computer was bought in 2006 and still works fine, albeit with an upgraded hard drive, 3 GB added RAM, fresh upgraded power supply, and new Windows 7 installed. A brand new computer would probably be not that much better after a few months and lots of wasted money installing new software. And, by the time the hard drive goes bad in 2017 or 2018 (or 4 GB, the maximum my motherboard allows, is not enough), hyperinflation should already have come (Neptune crossing 9 Pisces is the trigger). Internet II could already be reality, and wasting time lining up for the latest model will not be cost effective. This one should then last until I can get the new model for a silver eagle and set up time.