JoshuaInNippon writes: In a brief press released buried within Sony Japan's website, the company announced that they would be ending sales of the class 3.5 inch floppy disk in the country in March of 2011. Sony introduced the size to the world in 1981, which saw its heyday in the 1990s. Sony has been one of the last major manufactures to continue shipments of the disk type they helped develop, but had ended most worldwide sales in March of this year. The company's production of the 3.5 inch floppy ceased in 2009. Sony noted the demand, or a lack there of, as the reason. The company's withdrawal is one of the final marks in the slow death of the floppy era.