Samsung (005930) just can’t resist teasing us with the Galaxy S IV. The company has posted an image of a silhouetted device on its official Twitter account with a caption that reads, “The countdown for #TheNextBigThing has begun. Who’s ready for the Global Unpacked Event on March 14?” From a design perspective, the image shows a device that looks very similar to the Galaxy S III in terms of shape. In fact, the image teased on Samsung’s Twitter page looks a lot like the leaked images we saw yesterday that were purportedly of the Galaxy S IV, so it wouldn’t be surprising if Samsung sticks with the same design that brought it so much success over the past year.