There is a new rumor out there. It seems that the new Android version will bring updated updated TouchWiz UX toSamsung Galaxy Note 4. The latest TouchWiz was released alongside Samsung Galaxy S6 and Galaxy S6 edge.
Most global versions of the Samsung flagship phablet are now running Android 5.0.2. But with the Android 5.1, the new user interface will be a great addition to the Galaxy Note 4.
Samsung Galaxy S6 and Galaxy S6 edge will be the first to receive Android 5.1. But there is no information about the update for the Note 4.