The XY BREAKpoint expansion set was released in February 2016 and contains 123 cards (if you count the secret rare Gyarados EX 123/122). The most valuable cards tend to be the 20 Pokemon EX (4 of which are Mega EX Pokemon) and 5 Pokemon BREAK cards.
BREAKpoint Set List
Complete list of cards in the Pokemon XY BREAKpoint expansion set.