If JBJ has had some sort of vocal surgery, than it suggests he plans to still sing for a few more years yet.

I think the evidence will be in live singing! Also, he's not going to sing high pitch (if he can on) all through an album and all through a performance(s). He's older and wiser, let's hope he's finally stopped smoking. I guess, he has if indeed he has had voice surgery of some kind.

I hope fans temper there expectations on what a new album(s) will now sound? Maybe a bit more rockish songs, but with not a change in style. JBJ, has said don't expect another SWW type songs, voice surgery or not.