It almost seems that O' Brien has somehow replaced the late, great Bruce Fairbairn as THE eminent rock producer (Bon Jovi, Van Halen, Aerosmith). Fairbairn passed away at age 49 at the peak of his career, producing an extremely large range of artists; his producing style was always hallmarked by discipline and a fuller reach of his own input as a musician himself (Fairbairn played horns), and he is sorely missed to this day.
At any rate, whenever Aerosmith releases the new album, it should be worth the wait, and should usher in a new era in the band's long and storied career. Eight years without any new release is the longest dormant time that Aerosmith has ever had now. But as always, the band is hoped to rise to the occasion and show the world that they aren't finished with their nine lives yet.