Verizon is notorious for demanding OEMs to lock up their bootloaders. Reports indicate the reason behind Verizon Bootloader Policy is that; "an open boot loader could prevent Verizon Wireless from providing the same level of customer experience and support. (Full Statement)" Fortunately, Samsung understands the value of an open device for developers so instead of going head on with Verizon they are going around them. Samsung will be offering a $599 Developer Edition of their latest flagship device, the Samsung Galaxy S 3. This device will work on Verizon but will have an unlockable Bootloader.
Why is a locked Bootloader bad? It makes it difficult and at times impossible to root & run custom ROMs. This is great news for our community and for developers looking to support the SGS3 on Verizon. The device is unsubsidized and only sold by Samsung. Therefore, the $599 price tag will be unappealing to most but this device is not meant for everyone.
If you happen to purchase this device, be aware that "Verizon will not provide support for users with problems, and phones with unlocked bootloaders and custom software won't be covered by the handset's warranty." I guess this is the price you pay for openness. The sale of this developer device is not yet active but will begin soon.