but this is the beauty of the iPhone.
instead of being stuck with horrid software, like on the Treo 750, knowing that things could be improved, apple is actually making the first phones they sold BETTER.
Palm (especially) would sell you a new phone, but not improve the old
apple will offer software upgrades to improve both the oldest and the newest phones.
THIS is why the iPhone is a strong seller and changing the marketplace. Apple is the first major player to realize it...