The Pokémon TCG: Dragon Vault TCG expansion was released on October 5th, 2012. Pictures from the press release have been added to an Imageboard thread.

Dragon Vault

Open the Vault and Let Loose the Dragons... for the Very First Time! The vault echoes with the roar of Dragons—can you train what you find within? Inside the Pokémon TCG: Dragon Vault, you'll discover a treasure trove you've never seen before! You'll find incredible Dragon Pokémon such as Rayquaza and Druddigon—ALL of them foil!—in special 5-card booster packs, plus a code card to unlock hoards of rewards for the Pokémon TCG Online. So, when you open the vault, be prepared to command the might of these powerful Dragon Pokémon!

Dragon Vault treasures include:

• 3 Pokémon TCG: Dragon Vault 5-card booster packs!
• Special Dragon Pokémon and Trainer cards, all of them foil!
• 1 of 5 unique Dragon Vault promo cards!
• A code card to unlock this treasure trove in the Pokémon Trading Card Game Online!

Source: https://www.pokemon.com/us/pokemon-tcg/dragon-vault