For the people who plan to have the Samsung Galaxy S, it will come with the stock version of the Android 2.1 OS. It seems that the stock version is functioning just fine although some issues like the camera app is not functioning.
The bugs are as expected considering most Android handsets are getting the updated Android 2.2 (FroYo). Then again there is no assurance if the updated Android 2.2 OS is free from glitches as we can see from other handsets which already got them. Check out the video demo to see the Samsung Galaxy S and some insights as well.
