Speaking of dinosaurs, we better tell you now: The next release will be iOS 5 only. That means the only device left out will be the original iPhone 3G. Everything from the 3GS onwards can be updated (and runs better with) iOS 5.
At last count, I noticed about 50 people having used it on a iPhone 3G in the past month, we can't tell how many of those were just trial or customers, though. In any case, 2.6 will keep working for those people, but they can't update to the next.
And one of the greatest advantages on iOS 5 is incremental OS updates. You'll be rid of having to completely wipe the phone (and lose all maps) when upgrading the OS.
So those not on iOS 5 yet: get over your fear of using iTunes, plug it into your computer and let it update!
