It is only a minor update, so don't expect much. I personally have noticed:
- When you hold down the power button, an option to take a screenshot of your current screen is appended to the list of power options
- You can now take 3D Panorama photos (although as the SK17i isn't 3D enabled, they won't actually have any 3D effects; but it is still pretty cool)
- Google Talk apparently now is enabled, however I live in the UK so that is useless to me
But I think that is about it.