139th, 140th Best Wishes episode titles unveiled
「エモンガ、ロケット団に入る！」Emonga Joins Rocket-dan! is scheduled to air Sept. 5, 2013. An Exploud will appear in this episode. Iris's Emolga breaks up with her and then joins Team Rocket. The summary did not mention the reason that Emolga broke up with Iris.
Full summary - While waiting for their ship to leave in the evening, Ash and friends relax on a meadow. But then, Iris's Emolga gets angry due to a simple misunderstanding. Emolga flies away, sulking, then loses balance and falls to the ground. Where she fell, Team Rocket are waiting, and Emolga ends up battling their Pokemon. Seeing how well she battles, Team Rocket invite her to join, and Emolga goes off together with them but...
「デントＶＳ氷の挑戦者！サンヨウジムの危機！！」 Dent vs the Ice Challenger! The Crisis of Sanyou Gym!! is scheduled to air Sept. 12, 2013. The short summary mentions that the ice challenger is a Gym destroyer. Chili and Cress make an appearance in this episode.