grcumb writes "Looks like the folks at Google have made good on their promise to release the Android 4.0 source code. Android software engineer Jean-Baptiste Queru writes: 'Hi! We just released a bit of code we thought this group might be interested in. Over at our Android Open-Source Project git servers, the source code for Android version 4.0 (Ice Cream Sandwich) is now available. ... This is actually the source code for version 4.0.1 of Android, which is the specific version that will ship on the Galaxy Nexus, the first Android 4.0 device. In the source tree, you will find a device build target named "full_maguro" that you can use to build a system image for Galaxy Nexus. Build configurations for other devices will come later.' "
Once nice side-effect of this is that the revision history for the non-free Honeycomb series is also available, albeit without any release tags.