With new info having emerged today pertaining to the Galaxy Note 6, those holding 2014's Note 4 may have begun to feel a tad behind the times. But a major firmware bump can give an aging handset a rejuvenative lease of life, and once you've grabbed the latest Android 6.0.1, it may seem as though you've gotten a whole new device.
You'll surely now know score with regards to Marshmallow's features: there's Doze, Google Now on Tap and a welcome refresh to Samsung's TouchWiz overlay, among various other optimizations. Since it's version 6.0.1, you can also reap the benefits of some 200 new emoji, and the update comes with the latest April Android security patches in tow.
As noted above, Sprint has already begun pushing the new flavor of Android to Note 4 owners. Given that the International model (SM-N910C) is now getting the update, Galaxy Note 4 owners on other carriers should expect the Marshmallow update in the very near future.