As part of the Final Fantasy XIV Fan Fest keynote presentation, director and producer Naoki Yoshida revealed that the upcoming 24-player raid series will be a crossover with the iconic anime series Neon Genesis Evangelion. It's called Ghosts of Desire and is part of the post-game content for FFXIV Evercold, which launches in January 2027.
Ghosts of Desire Crossover Raid Series
This crossover isn't as unlikely as you may think. The creative mind behind NieR Automata, Yoko Taro, worked with the FFXIV team for the Shadowbringers raid series that brought NieR-themed content to the MMORPG. But he's also doing the composition and screenplay for the new Evangelion anime series alongside Studio Khara (which is headed by Evangelion creator Hideaki Anno).