As per the sources, it is said that both Galaxy S6 and Galaxy Note 5 is going to get the Android 7.0 Nougat update in Europe by next month.
As per the image posted by VP of Samsung Electronics of Turkey, Galaxy S6 Edge+ is going to get the Nougat in the third week of February. Later, the standard version will get in the month of march.
The above mentioned dates are for Turkey but Mainland Europe would not be far behind. Users over there are also expected to get the update in the month of March.
Additionally, The Samsung Galaxy A (2016) series and the Galaxy J are scheduled to receive the update in May and July respectively.