Available for download from this Samsung support page, the update...
No major changes then it seems, but you should still update your device.
...should enhance roaming capabilities, especially Internationally. In addition, there are cosmetic user interface changes (several icons have been changed) contained within the update. The update will take about 10 minutes to complete if the system is already set up.
Bear in mind that, as with all ROM upgrades, your device will be hard reset, so back up your data first!
[Via: Smartphone Thoughts]