Unfortunately the developers said the game will cover the beginning and until the end of the arrancar arc. No mention of fullbring but the reason for not covering until the end is that the TYBW anime isn't done yet and they didn't know how to include it when they started development of the game years ago (they didn't want to follow the manga because they already based the new game colour scheme on the TYBW anime and the anime has new scenes and additions coming so they rather wait for it to be completed). So the big question for everyone is whether it will come as a massive DLC update after the end of the anime in 2025.
Comment for engagement. I swear, ever since I watched this trailer, RU-vid has been recommending so many channels like this to me. I'm a fellow manga reader as well (read it a few years ago before TYBW anime was announced). So hype for Cour 3 and Rebirth of Souls!