Samsung revamped its S Pen suite for the Galaxy Note7 - all the apps were consolidated into one (Samsung Notes) and the drawing experience was overhauled. The good news is that the company won't make you upgrade your older Note just to get the new software - it will soon release the app for "other Note devices in the near future." Samsung Notes in action There's no indication of how far back through Galaxy Note generations (phones and tablets) you can go with the new app. After installing it, you'll be able to import your old S Note and Memo content through your Samsung...
Source: http://www.gsmarena.com/samsung_notes__note7s_s_pen_app__coming_to_older_devices-news-20155.php
