The extremely large cast of characters already heavily imply a gacha system Seeing as how we only have cinematic trailers, to be fair its possible. However, after their revenues of $200 million from Genshin, I highly doubt that they will stray away from their successful recipe.

People not telling you the obvious, if it's a free download then it's going to have gatcha. Always been like this from what I could remember has a long time mobile gamer.

Back in the day when gacha games are mostly games with 2D png characters and a turn based or idle mechanics. The gacha system is not really worth spending money into. Mihoyo changed the status quo when they introduced a gacha game with 3D waifus in it with action packed gameplay (Honkai Impact 3rd). Gacha has always been a successful monetisation model, there is no reason to not have it in a game nowadays, even FPS games have it.

But but but the S tier drops. You no want an s tier drop?