A day before launch Samsung releases source code for AT&T and T-Mobile variants of Galaxy S III (SGH-I747M, SGH-T999V resp.). By this developers will be able to make their custom ROM which will help them and you to flaunt Samsung galaxy S III to its maximum capabilities. Developers will be happy with this. So if you want to do some developing head over to source link for more information and to download source files.
Source:
SGH-I747M’s  here.
SGH-T999V’s  here.
