Newly announced Samsung Galaxy S 3 interface is now extracted from leaked firmware and successful ported to little brother Samsung Galaxy S 2,
Look of Sgs3 Launcher
5×5 layout look really nice however users have to choose which layout on your mobile you can switch to 4×5 layout as well.
Here is how to install video by bbdd3650,
For further detail on this new Ported Launcher of Sgs3 Click Here