Following last week's Ice Cream Sandwich update release for the international Samsung Galaxy S II, the kernel source code (along with other open-source odds and ends) for the new firmware has been released online. Android's Linux kernel lies at the heart of the OS, and kernel source code for Android devices must be released by manufacturers under the GNU General Public License.
While the code won't be of any use to your average Galaxy S II owner, custom firmware developers will welcome its release, as it'll assist them with the development of ICS ROMs for the device. That in turn makes for better custom ROMs, which is good news for everyone.
To grab the code for yourself, head to the source link and type "i9100" in the search box.