For anyone not into PokemonTCG, this looks like PokemonTCG but will play with different cards and different rules. Energy is different (it looks like you have energy in an Energy Zone instead of attaching to individual mons), the battlefield is different (3 bench spots instead of 5), and so far the cards look to be simplified from actual existing cards.

I believe last time they showed it off it was something like 2 free packs a day, and trading is included (unlike the current digital platform, Pokemon TCG Live).

So overall, it’s probably a fairly different game that’s looking to simplify the gameplay and introduce the entire “collect and play” thing to people for free. Hook them in with this, and maybe get some people invested in playing “real” PTCG.