iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Apple TV Refresh to Be Stealth Update, Will Not Affect Product Features
The company explained that the changes are strictly internal, and there won't be any new features or other changes. The Next Web is also reporting that the new Apple TV will use Apple's A5X processor from the third-generation iPad, and an upgraded Broadcom BCM4334 wireless chip, as was reported last night. The external size of the device will also remain the same.
“We sometimes make component changes which require an updated model number for regulatory approval,” an Apple spokesperson told TNW. “The component changes we made don’t affect product features and Apple TV customers will continue to have the same great user experience.”The new Apple TV will not be marketed as a new version, and it appears the only way to distinguish the old from the new is via the model number.