Lately, the South Korean company hasn't done a great job in delivering these security patches all over the world, but the good news is Samsung Galaxy S7 and Galaxy S7 edge users in the United States are in for a nice surprise.
It looks like Samsung has already begun the rollout of August security patch for these particular two Galaxy S series handsets. Naturally, the smartphones will remain on the same Android 6.0.1 Marshmallow version, since this is just a maintenance release.
The main issue fixed by this update is related to the SideSync application, which could allow for malware to be installed on the smartphones if it's activated before completing the Setup Wizard.
Other than that, the South Korean company confirmed in the official changelog that it will provide 8 Samsung vulnerabilities and exposures, which are supposed “to improve user experience and confidence of Samsung Mobile devices.”
The August security patch is pushed OTA (over-the-air), so you might not get it right away. In order to download and install the update make sure to hit the Settings / About device / Software update and tap Download Updates if the security patch shows up on your phone. On the other hand, you could wait for the system to notify you when the update is available for download.