Please see https://github.com/beagleboard/linux for the latest official kernels.
Kernel for the beagleboard.org boards
beaglebone-3.2 patchset:
git checkout origin/beaglebone-3.2 -b beaglebone-3.2
./patch.sh
beaglebone-3.8 patchset:
git checkout origin/3.8 -b 3.8
./patch.sh
beaglebone-3.12 patchset:
git checkout origin/3.12 -b 3.12
./patch.sh
beaglebone-3.13 patchset:
git checkout origin/3.13 -b 3.13
./patch.sh