iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Apple Begins Using 'iTun.es' As Link Shortener
One month later, Apple has done just that. Users sharing links to iTunes Store content to Twitter will now see iTun.es being used to generate the links for their Tweets. Third-party Twitter applications may, however, continue to display Twitter's default "t.co" shortened version.