iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Apple has Sold Over 5 Billion Songs on iTunes
Apple also reveals that customers are buying and renting over 50,000 movies every day making iTunes the most popular online movie store as well. iTunes now houses over 20,000 TV episodes and over 2,000 films including over 350 in high definition.
Apple first reported it had become the number one music retailer in the U.S. in April.