Samsung just started rolling out the Premium Suite upgrade for their flagship GT-I9300 Galaxy S3 in UK. certain new features found in the Galaxy Note 2 will be included in this Android 4.1.2 update like Multi Window, as well as other new camera enhancements like Best Face and Low Light Mode, Paper Artist, Contextual Awareness and the like

watch the official videos here to learn more about the Premium Suite:
Premium Suite Upgrade for Galaxy SIII (Part 1)
Premium Suite Upgrade for Galaxy SIII (Part 2)