If you're rocking the AT&T variant of the LG V10, you'll be happy to hear that the Marshmallow update is now rolling out. The update weighs in at just over 1GB in size, so you will want to make sure you have enough battery power, and a strong Wi-Fi connection before attempting to download it. The update brings a number of new features to the phone, like enhanced permission controls, Doze and much more.
The update has only just started pushing out, so it may take a bit before you receive the notification on your phone. If you don't want to wait, you can head into your Settings, then About device and check for the update manually. Once you've got the update installed, be sure to hop in the forums and let us know how it is working out for you.