AT&T LG V10 is receiving an OTA update with software version H90010F, but it’s not the update you’re waiting for (Android 6.0 Marshmallow).
We haven’t received an official word from AT&T about the update, but user kangi26 over at xda says his LG V10 on AT&T is getting the OTA update with Android version 5.1.1 and build number LMY47V.
Since AT&T hasn’t announced the update yet, we don’t have any details on the changes made. However, the xda user says he is digging into the update to find any noticeable changes, you may want to check this post for more info.
If you haven’t received the update notification yet on your AT&T LG V10, you may force check for the OTA manually via Settings > About phone > Software updates section.
Do let us know if you find any noticeable changes after installing the H90010F OTA update to your AT&T LG V10.