That's not a good move unless his contract is expiring soon. The next generation of cell phones will hit over the next six months, with many of the high-end ones being dual-core. The Galaxy S already has a known successor, but it's just a speed-bumped Hummingbird processor with double the RAM. The iPhone 5 is expected to be dual-core with a very powerful GPU. Motorola has some Tegra 2 based phones in the works, really fast stuff.
Thanks, I am sure he will re-evaluate when the time comes. He does / did love his iPhone, so he might end getting the newer version. The problem is, the latest will always be around the corner. The second any device makes it to market it is outdated.