The official Pokémon website has announced the Pokémon Sun & Moon TCG Expansion set Forbidden Light on March 14th, 2018 and it was released in May 4th, 2018.

Pokémon Sun & Moon TCG Expansion - Forbidden Light

Necrozma continues to take the Pokémon world by surprise in the Pokémon TCG: Sun & Moon—Forbidden Light expansion! The fierce and mysterious Legendary Pokémon has taken on a new form as Ultra Necrozma-GX, and other Pokémon gather to welcome this new light...or to resist it. Lucario-GX, Greninja-GX, Zygarde-GX, Yveltal-GX, Naganadel-GX, even Volcanion and the majestic Arceus must choose a side. This impressive expansion delivers more awesome Prism Star cards, which are so powerful, you can have only one of each in your deck—and once used, they go into the dreaded Lost Zone, never to return. Players can also look forward to lots of cool Pokémon and Supporters originally encountered in the beautiful Kalos region. Discover awesome Pokémon and mysterious treasures in the Pokémon TCG: Sun & Moon—Forbidden Light expansion!

• Over 130 cards
• 5 Prism Star cards
• 8 Pokémon-GX and 6 Ultra Beasts
• 15 Trainer cards and 2 Special Energy cards

The complete Sun & Moon—Forbidden Light expansion will be available to play in the Pokémon TCG Online when the expansion launches.

Source: https://www.pokemon.com/us/pokemon-tcg/sun-moon-forbidden-light/explore-and-watch/

Pokémon TCG: Sun & Moon—Forbidden Light Elite Trainer Box

Glow with confidence when you sit down for your next battle, thanks to the Pokémon TCG: Sun & Moon—Forbidden Light Elite Trainer Box! This impressive collection contains a plethora of game-enhancing accessories, including dice, high-quality condition markers, card sleeves, and a player's guide to the latest expansion, full of tips on how to construct your next competitive deck. Plus, you'll bulk up your card collection with eight booster packs from this epic expansion that features loads of amazing cards, Ultra Beasts, Pokémon-GX, and more. With the Pokémon TCG: Sun & Moon—Forbidden Light Elite Trainer Box, nothing is off-limits!

The Pokémon TCG: Sun & Moon—Forbidden Light Elite Trainer Box includes:

• 8 Pokémon TCG: Sun & Moon—Forbidden Light booster packs
• 65 card sleeves featuring Ultra Necrozma
• 45 Pokémon TCG Energy cards
• A player's guide to the Sun & Moon—Forbidden Light 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

The Pokémon TCG: Sun & Moon—Forbidden Light Elite Trainer Box will be available May 4, 2018, at PokemonCenter.com and other retailers where Pokémon TCG products are sold.

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