There was a few rumors saying that a new software update was coming to the Samsung tablet.

Samsung Mobile Netherlands has confirmed on a facebook post there will not be an update to Android 6.0 Marshmallow for the Samsung Galaxy Tab S.
This is kinda surprising for some users, since a few have seen the Samsung Galaxy Tab S running Marshmallow in benchmarks.

Maybe Samsung Galaxy Tab S is now an old tablet in technology terms and there’s no point on updating this model anymore.