The designers of the iPhone 5 chose a larger iPhone footprint and a newly designed connector as part of the new design. This has led to incompatibility issues that have caused me to rethink an upgrade at this time. I own a 2011 BMW that through a cradle adapter allows me to view iTunes album art and music videos as well as ongoing charging of the 4S phone. This capability is rendered unusable by the design features of the new iPhone 5 and resulted in me canceling my preorder of the 5 and waiting until these issues are resolved. The new features are not worth the loss of functionality from the 4S which works fine.