The LTE evolution negates the GSM vs. CDMA debate, and it also promises global connectivity. In a recent chat, AT&T Mobility President & CEO Ralph de la Vega said that his company was going to migrate to LTE as the 4G solution. In such a scenario, you and I can then switch between the two services without worrying too much about handsets.
What does this mean for WiMAX?
Update (2007-11-30): CNet has a bit more to say about this in this article.