Verizon has released a new software Update N910VVRU2CQC1 for Galaxy Note 4 in the US. The new update brings March security patch which includes 73 fixes for vulnerabilities and exposures in the Android OS.
The update also fixes an email issue that prevented Outlook 2007 and 2003 users from accessing and downloading email attachments. It also updates the Amazon Shopping app. Also, the firmware update includes device stability improvements, bug fixes and further improvements for performance.
Software Update N910VVRU2CQC1 for Galaxy Note 4 is now rolling out as OTA update. The updates will gradually roll out to everyone. However, you can also check manually for updates, Go to Settings > About device > System update.