It seems to be small update that didn't change the version number, what I like to call a "dot of a dot of a dot" update. My wife's S7 got an update today. It came with 6.0.1 installed and after the update it was still 6.0.1. Android and Apple don't go out past three numbers on their respective OS's. Where other software makers I've seen do.
And yes, I am starting to believe that Samsung screwed up somewhere with the whole Marshmallow roll out for the Tab S2s. Also, because I have the Tab S2 Nook, I am starting to think it is now Barnes & Noble who dropped the ball.