The new Samsung Galaxy S II has an updated UI with TouchWiz 4.0 that brings some enrichment to the phone like motion zooming, new icons, and few other cool features. If you’ld likes to implement this new TouchWiz 4 launcher to your old Galaxy S, folks at XDA have ripped it for you.
To implement this new TouchWiz 4, you’ll need a Galaxy S running a deodoxed JVB Gingerbread ROM. It’ll also works on Galaxy S Custom ROMs based on the XXJVB firmware.
However, the ripped TouchWIZ 4.0 launcher has some stability issues on Galaxy S. You can find more information and download at source here.