I want to know what the events there are for Pokemon X and Y and if you guys can make a list of new HA Pokemon in generation VI can you put it in the answer too?
rumored wi-fi events:
HA: not totally sure what you meant here, but here are the gen 6 Pokemon (i have listed only one of each family) with new hidden abilities. correct me if you meant something different
-Bunnelby Huge Power
-Fletchling Gale Wings
-scatterbug Friend Guard
-Skiddo Grass Pelt
-Espurr Own Tempo
-Spritzee Aroma Veil
-Helioptile Solar Power
-Hawlucha Mold Breaker
for other Pokemon with HA: look here
Both the list of events and the list of new hidden abilities in gen VI(I assume you meant VI and not IV) are long. You can find the events for X and Y here, I haven't found any list only stating the new hidden abilities but here is a list for all HA as of X and Y and you can find the ones you want to know about.
Sources: Bulbapedia and Serebii
Hope I helped.