This article brought to you by Bulbanews, your community Pokémon newspaper.
As with the March 2012 Gym Challenge, the June 2012 Gym Challenge featurs a promotional card pack of 10 cards: 4 new Pokémon cards, 2 Reverse Holofoil Trainer cards, and 4 Holofoil Energy cards. The four new Pokémon cards are Ampharos, Trubbish, Aron, and Braviary. The 10 promotional cards are numbered 134/BW-P through 143/BW-P.
Below are photos and translations of the new cards.