There has been quite an uproar as of late over Google's handling of the source code for Honeycomb, their most recent version of Android. The company announced this week that it would be delaying the release of the Honeycomb source in order to iron out some issues, specifically ones involving running it on small-screen devices (i.e. phones). Andy Rubin gave an explanation as to why these issues exist:
Android 3.0, Honeycomb, was designed from the ground up for devices with larger screen sizes and improves on Android favorites such as widgets, multi-tasking, browsing, notifications and customization...We didn't want to think about what it would take for the same software to run on phones.