I hope CX will bring MAA back sometime next year. May be flying in September or October though nothing is set in stone yet. I remember the last time flying them to MAA in 2018 & 2019, those flights were always full when they put the same 3-class 77W.
As far as I understand, MAA is not off the schedule at all by any means, meaning it will likely come back. During the pandemic, CX631/632 flew to MAA during certain periods (primarily Winter). I'm sure they'll bring it back, we'll just have to wait and see.