Hello, I'm Satoru Iwata here to thank you for buying Pokemon™ Omega Ruby or Alpha Sapphire! We regret to inform you that thanks to the incredible amount of content in these games, there wasn't enough time to implement the Battle Frontier from Pokemon™ Emerald, but we have instead put the beloved Battle Maison from Pokemon™ X and Y into the game instead. Look forward to experiencing the full Battle Frontier in Pokemon™ X2 and Y2, on sale in Fall 2016!