Google has announced Android 4.0 Ice Cream Sandwich. This version has unified experience for phones and tablet. Google Android 3.x version has been specially made for tablets. After Gingerbread this is the major release of Android for Phones. Android 4.0 has rich UI, customizable home screens, resizable widgets etc.
Android 4.0 for developers?
Android 4.0 makes easy for developers to develop phone and tablet applications together. With unified toolkit developers need not worry about specifying different UI for phone and tablets. New Android has improved notification and improved app management in the launcher. OS also has improved face detection, Hardware Accelarated 2d drawing and a better support for mouse. New SDK and ADT plugins are also released.