I keep checking their official socials and the author duo's newsletter like it's my second job. Last I saw, they mentioned aiming for late 2024, but it was a loose target and they've been clear about not rushing the finale. The ninth book is the big end, so they're probably wrestling with tying up all those prophecies and Darius-Solaria threads. Honestly, after the emotional wreckage of book eight, I'm okay waiting if it means a polished conclusion. I'd rather get a complete ending next year than a rushed one tomorrow.
Someone in a Facebook fan group pointed out their past release patterns—usually around November or December. But with this being the final book, I wouldn't be shocked by a slip into early 2025. The fanbase is rabid, myself included, so any official date will explode across the forums instantly. For now, it's just re-reading the series and scouring every 'sneak peek' post they drop. The anticipation is half the torture, fitting for Zodiac Academy really.