iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
AppleCare Representatives Receiving Prerelease Builds of iTunes 11 Ahead of Public Launch
It is unclear if these builds point to a release today, as the WSJ predicted, and if they are the final versions. Either way, with AppleCare employees getting their hands on the new app, we’re expecting a launch soon.
The new iTunes brings a substantial overhaul, including a revamped player, a redesigned store based on the layout currently seen in on iOS devices, and new iCloud features for streaming media and syncing progress.