In other words, they can sell one model line that works on both Verizon and AT&T. The million-dollar question is whether or not it will come LTE-ready.
Nah, the iphone isn't ready for LTE. The battery consumption is just not there yet plus ATT isn't going to be fully LTE ready before release.
Heck, the gsm/cdma combo would be surprising itself (though I had said that was most likely as companies likes 1 manufacturing process). That will be interesting to see how it handles battery consumption.