The folks at xda-developers have a knack with Android devices and have cracked open yet another locked down handset. The latest to fall is the Galaxy S III on Verizon, which is one of the only S III models in the US to ship with a locked boot loader.
The ability to unlock the boot loader will now let S III owners replace the stock Verizon ROM with one from individual developers. To unlock your boot loader, you’ll want to head to xda-developers and follow the instructions in this post. You’ll need a Mac or Linux box to do the unlocking, which may be a deterrent for Windows users. Now that the boot loader has been unlocked look for an explosion of ROMs compatible with the handset.