Verizon starts seeding Android 7.0 Nougat for Samsung Galaxy S6 and S6 edge
Until Verizon won't release the proper documentation for this update, we can't confirm what security patch the update contains. The good news is the Android 7.0 Nougat update does include “security updates,” it's just we don't know yet if it's the March or April patch.
According to the official changelog, the update also contains a new battery management, among other improvements. The size of the Nougat update for the Galaxy S6 and S6 edge hasn't been revealed yet, but it's likely to weigh in at more than 1GB.
Since the rollout hasn't been mentioned on Verizon's support page, it's likely that the carrier has just started seeding the update to the two smartphones, so it might take a couple of days until Android 7.0 Nougat will propagate to more devices.