CVPCS has begun work on the Kexecless version of Cyanogen Mod 10 for the Galaxy S3. He had actually done an excellent job of working around the locked bootloader, and in all reality there was absolutely no need for an unlocked bootloader for installing CM10. However Kexec requires the phone to run through the bootup process 3 times, and can become pretty annoying. With the unlocking of the bootloader Team Cyanogen can now begin work on making this phone official.
Grab the latest unofficial build form the leak below and be amazed at how fast it boots up without the use of kexec recovery!