Samsung has today started rolling out this month's security patch for the factory unlocked variant of the Galaxy Note 4 in Germany. Typically, after an upgrade starts making the rounds in the region, it heads to the Netherlands, followed by Poland and then the United Kingdom.
As outlined in the changelog that was posted on the firm's Security Blog a little more than two weeks ago, the update addresses a total of 67 Common Vulnerabilities and Exposures (CVE) in the Android OS and an additional 28 patches for its latest smartphones.
Like usual, this release is being pushed out in stages. To see if the OTA is ready for your device, simply head into Settings » About Device » Download Updates Manually. Alternatively, you can always wait until you receive a notification prompting you to install the upgrade.