The previous version, Pokmon TCG Online, is shutting down "shortly prior to the launch" of the new game
If you want to know exactly what will be included, here is the full list of cards in the Secret Lair x Hatsune Miku: Sakura Superstar plus links to the original cards on Gatherer, the official Magic card database: 1x Shelter 1x Chandras Ignition as Mikus Spark 1x Harmonize 1x Azusa, Lost but Seeking as Miku, Lost but Singing 1x Feather, the Redeemed as Miku, the Renowned 1x Inspiring Vantage Secret Lair is a way for fans of Magic: The Gathering to buy unique alternate-art versions of their favorite cards
The problem is that even the newest Pokmon sets are scarce, expensive, and scalped to high heaven
Japanese sets feature exclusive Special Art Rares (SAR) with full-illustration designs by artists like Mitsuhiro Arita and HYOGONOSUKE artwork that often never appears on English prints
With the exception of one store in Japan I had read about, I saw no evidence of retailers placing limits on products, and didnt feel I could count on the set being available by the time I travelled there on release day