One of the good things about Samsung is that the company is quick to release the source code for their Android devices shortly after the update starts rolling out to the device. This lets developers and people who like to tinker around with the software to get their hands dirty and come up with custom ROMs and such.
After the Android 4.1 Jelly Bean update started rolling out for the original Galaxy Note, it was only going to be a matter of time before the source code was released. And like clockwork, it has.
To get your hands on the Galaxy Note (GT-N7000) Jelly Bean source code, click here.