The Pokémon Company International announced the Sun & Moon Celestial Storm TCG expansion set on June 19th, 2018 and it was released on August 3rd, 2018.

A CELESTIAL STORM IS HEADING TO RETAIL THIS AUGUST WITH THE LAUNCH OF THE LATEST EXPANSION OF THE POKÉMON TRADING CARD GAME

The season of emerald storms is nearly upon us, and with it a tumultuous battle between Pokémon and creatures from Ultra Space. The lineup for Sun & Moon—Celestial Storm includes several new Pokémon-GX: Articuno-GX, Blaziken-GX, Scizor-GX, Stakataka-GX and Rayquaza-GX, alongside new Prism Star cards featuring Latios, Latias and Jirachi.

The Sun & Moon—Celestial Storm expansion will feature:

Over 160 cards, including:

• 3 new Prism Star cards
• 11 Pokémon-GX
• 27 Trainer cards

Each booster pack will include:

• 10 cards from the expansion, including at least 1 rare card, plus 1 basic Energy card

Pokémon TCG: Sun & Moon Celestial Storm Elite Trainer Box

The Pokémon TCG: Sun & Moon Celestial Storm Elite Trainer Box was available at the Pokémon Center and where TCG products are sold on August 3rd, 2018.

The latest Pokémon Trading Card Game expansion, Sun & Moon—Celestial Storm, has arrived, and if you’re looking to quickly bulk up your collection, this Elite Trainer Box is a fine way to go. Whether you’re a collector or a competitive player, you’ll find plenty to enjoy inside this package. In addition to eight Sun & Moon—Celestial Storm booster packs, it includes 65 card sleeves featuring the mighty Rayquaza to help keep your cards minty fresh. Gaming accessories like high-quality dice and condition markers will ensure you’re playing in style, and the collector’s box that houses all these goodies (and more!) makes a great place to store your card collection. Prepare for some thunderous victories when you bring home the Pokémon TCG: Sun & Moon—Celestial Storm Elite Trainer Box!

The Pokémon TCG: Sun & Moon—Celestial Storm Elite Trainer Box includes:

• 8 Pokémon TCG: Sun & Moon—Celestial Storm booster packs
• 65 card sleeves featuring Rayquaza
• 45 Pokémon TCG Energy cards
• A player’s guide to the Sun & Moon—Celestial Storm expansion
• 6 damage-counter dice
• 1 competition-legal coin-flip die
• 2 acrylic condition markers and 1 acrylic GX marker
• A collector’s box to hold everything, with 4 dividers to keep it organized
• A code card for the Pokémon Trading Card Game Online

Source: https://www.pokemon.com/us/pokemon-tcg/product-gallery/sun-moon-celestial-storm-elite-trainer-box