This is certainly a step up from the 2014.  The question is whether it is the vintage or just the extra year in bottle.  I suspect both but mostly the later.  The nose has cassis and spice but none of the bell pepper of the 2014.  On the palate, this has just a bit more precision and a bit more ripeness.  Both are young and it will be very interesting to follow them.  There is still room for this to improves as well.