The upcoming Samsung Galaxy S5 will not be equipped with an optical image stabilization, OIS for short, camera. Some say, that it is because suppliers can't deliver as many modules as needed for the time that the phone will be unveiled, others that there simply isn't any physical space on the device, which, if equipped, will become too big.
Some sources say, that we might see a Samsung device with OIS camera in the Q2 of 2014 but this is just a rumor.