Three new moves have been discovered through hacking X and Y. The first one appears to be an event-exclusive move in the vein of Celebrate, the second two may have something to do with Zygarde.
It has also been discovered through hacking that Hoopa’s Ability is Magician and its stats are 80/110/60/150/130/70. Volcanion’s ability is Water Absorb and its stats are 80/110/120/130/90/70.
Hold Hands, Normal-type, Special, Power: –, Accuracy –, PP: 40
The user and an ally hold hands. This makes them very happy.
Thousand Arrows, Ground-type, Physical, Power: 90, Accuracy: 100, PP: 10
This move also hits opposing Pokemon that are in the air. Those Pokemon are knocked down to the ground.
Thousand Waves, Ground-type, Physical, Power: 90, Accuracy: 100, PP: 10
The user attacks with a wave that crawls along the ground. Those hit can’t flee from battle.