Update news to pass your way and no, it’s not about Marshmallow. Galaxy Note 4s are currently receiving a nice software update that brings the device up to Android 5.1.1. The update is on the larger side, upwards of 650MB so you’ll probably want to jump onto WiFi before downloading the file.
No major changes in this update. It’s primarily a bug fix/performance enhancing update but it’s still good to get your device up to date nevertheless. If you’re not seeing a notification, jump into your settings and scroll down to “about device.” In there you’ll be able to do a manual check for an update.