I suspect that, sadly, they will not fit the callipers now used on the 2013 and later Pus 8s....
True, but you don't have to pay BMW / Main Dealer prices if you don't wish to, you could get a set of Bosch pads for 40 quid from a factor that would fit fine (assuming they use the same pads as a 6-series, which is a pretty fair bet I would think)