Verizon might have thrilled several of their customers who pre-ordered the Samsung Galaxy S III by delivering the devices almost a week early, but unfortunately for those looking to root the device, the phone carries with it a dark secret: a locked bootloader. Considering all other carrier versions are easy-to-root, and historically Samsung doesn’t tend to do so, it’s quite clear that the decision came from Verizon.
However, if a developer’s claims on Rootzwiki were to be true, it might turn out that Verizon’s efforts to close down the device have already gone down the drain. Personally, I would just head to another network if it were an option. If you can’t, and want to root your new S III, then as always: do so at your own risk. And thank the original developer.