The current software update gives you the most up to date Android™ security patch on your device.
Once installed, you should find your Galaxy Note 5 or S6 edge+'s security patch level in current with the latest June update. For the full rundown of what's address, you can see our overview of the June security bulletin.
Have you nabbed the update yet? Be sure to let us know what you think in the comments and on our forums!
Thanks to jboogie1289 and smhism for the tips!