It seems like Samsung releases official nougat 7.0 update for note 5 finally.....Today one member on Samsung vn site reported that he has received a nougat ota update weighing around 1.4gb ( N920c model )
Here are some screenshots
If any of the other member receives, Let us know
Update: it is here...
All credit goes to @samsungvn @Androidwizzard @hiepgia