Verizon has no plans to re-lock iPhone 5's GSM and 3G sides
 

When we learned that Verizon wouldn't lock the GSM-related components of the iPhone 5, we were waiting for a "gotcha" moment. Surely the carrier would clamp down and steer us back towards its more expensive roaming plans, right? Not according to Verizon spokeswoman Brenda Raney: she says there's no plans to lock Apple's handset at a later point. In other words, you should be free to use a Verizon-locked iPhone 5 on any compatible GSM and HSPA+ networks for as long as you'd like, including with AT&T and Canadian carriers. Of course, this still brings the caveats of having to both buy a Verizon model, either at full price or with a contract attached, and track down a nano-SIM for the carrier of choice. It could nonetheless settle the question of what carrier to pick if you regularly need a passport when you travel -- especially knowing that neither AT&T nor Sprint will be quite so open-minded.

http://www.engadget.com/2012/09/24/v...-and-3g-sides/