Samsung has just confirmed on their official “Samsung Lebanon” Facebook page that the Galaxy S IV will not be released before May 2013. We will have to take this information with a pinch of salt as mostly the information provided on Samsung's Facebook pages isn't always 100% correct.
Samsung Galaxy S IV is the next generation device in Samsung's Galaxy S series. Galaxy S IV is rumoured to feature an Exynos 5450 CPU clocked at 2.0GHz, Mali-T658 8 Core GPU, 4.99″ SuperAMOLED Full HD Resolution Display, 2GB of RAM, 13 Megapixel Rear facing Camera, 2 Megapixel front facing camera and run Android 4.2.1 Jelly Bean out of the box.
(Source: Samsung Lebanon)