Verizon are sending out security updates to all 2015 Samsung flagship phones. That includes the Galaxy Note 5, Galaxy S6 Edge+, S6, and S6 Edge. The update does not really go over much as to what it entails other than “Android security patches”.
If you own one of the listed phones and are on Verizon, but have not received the update yet, you can manually check for it. Go to your settings, click “About device” at the very bottom, and click “Software update”.