The Pokémon Company has begun teasing a massive update set to hit Pokémon Duel later this year. No details have been given for the upcoming update but this particular news will be shared soon. According to the app itself, the news will come on July 19, 2017. The only image shared so far depicts a large purple crystal, which you can check out above.
Source: Serebii
Pokémon Blog 
dark ex energy piece to either evolve your pokemon a power or to obtain a dark ex through collection purple energy pieces. Lol tease… please read and get excited guys.
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dark ex energy piece to either evolve your pokemons power during battle giving it 5 stars plus 5* to represent a dark form or to obtain a dark ex through collection purple energy pieces. Lol tease… please read and get excited guys.
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Millennium Crystal To get Jirachi lol. How many to get before obtaining Jirachi 50-100 pieces.
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