A 320 block patch for X&Y has been released that fixes a Vivillon sprite bug in the Friend Safari and certain Pokeballs (Timer, Dive, Safari, Net, Quick, Repeat, Dusk, Luxury, Great, Ultra, and Nest) not showing their unique animations for the first Pokemon you send out.
There are also two secret missions in the OR/AS demo that have been discovered, the first of which is more common and only provides new battles while the second is rarer and lets you transfer a Nugget to the full game. Both have a random chance of happening when going on an adventure.