While the Galaxy S7 and Galaxy S8 handsets will get Android O for sure, it is very likely that the Galaxy S6 series and the Note 5 phablet will never receive an official update to Android 8.0.
https://www.notebookcheck.net/Unofficial-list-of-Samsung-devices-to-get-Android-8-0-shows-up.230524.0.html
Still loving this one! Sadly is no more convenient anymore Right now there is some cheaper models with similar specs on the market: rigth now i m thinking on the Agm line! (specially the x1 gold edition check it out... still less than B64 euros :O )