This new update is already rolling out in select markets like the UK (as always, it’s a gradual roll-out, so you might need to wait a few weeks until it arrives to your region), and it’s available for the Snapdragon 800-powered Note 3 version.
What are the new features that it brings? The first one is KNOX 2.0, Samsung’s secure enterprise mobile platform, allowing companies to better handle bring-your-own-device (BYOD) situations. KNOX is basically a platform that strengthens your phone’s security on all levels - from all the way down in the kernel to the apps. With a secure device, companies can save money purchasing separate work phones (and tablets) for employees, and instead allow them to use their personal phone, but securely, without leaking sensitive company data.
The other new feature making its way onto the Galaxy Note 3 is Download Booster, which allows users to download files quicker by combining the power of their cellular (4G LTE in the Note 3) connectivity with their Wi-Fi connection. This maximum speed will be of particular value for large files that you need to download in a rush.
The new Galaxy Note 3 firmware comes in at around 185MB and is being pushed over the air.
source: GSM Arena