iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Netflix for iOS Updated to Support the iPhone 5's Widescreen
Support for the iPhone 5's taller screen is particularly useful in video/movie apps such as Netflix as it allows many widescreen movies to be viewed in their native aspect ratio. The Netflix app is a free download from the App Store [Direct Link] but requires a Netflix account.
Many popular apps are being quickly updated to support the iPhone 5's larger screen. Yesterday, Instagram was updated, and several iOS games have also seen updates.