I got the Tab A 2016 yesterday in the clearance sale at digitec for 149.-. After the initial installation, an update with Android 7 was immediately downloaded and installed. After the update, a factory reset is recommended, which should always be done after a major update. Everything has to be set up again, but the device is guaranteed to run better that way.
An update to 7.0 is available for the Galaxy Tab S II. Not yet for the Galaxy Tab A.
According to Computer Base, there will be an update for the Tab A.