1. Symbian^4 is not yet ready and they are working hard to bring it feature complete towards the end of this year.
2. Symbian^4 will bring a new DirectUI user interface. A whole new experience of smart mobile operating system.
3. The new UI will stand head to head with other modern smartphone operating system (iPhone, webOS, Android, Maemo).
4. Among Symbian^4 UI featuers are :
- multiple home screens with different wallpapers (also available in Symbian^3)
- context sensitive toolbar
- easy multitasking with task-switcher icon
- more to come!
5. Symbian Foundation will release more information in due course. Meanwhile, you can take a look at The Symbian UI Brainstorm blog for some really cool ideas regarding Symbian UI.
Source : http://twitpic.com/photos/OlyG