WWE posted the following breaking news on Twitter, announcing WWE RAW / 205 Live announcer Corey Graves will be taking over for JBL on commentary on WWE Smackdown Live.
With Graves’ move to Tuesday nights it was also announced that Nigel McGuiness will take over for Graves on 205 Live and WWE Main Event. As of this writing, it has not been announced if Graves will continue to work both RAW and Smackdown:
— WWE (@WWE) September 4, 2017
Last week, JBL announced he was stepping down from his commentary position on WWE Smackdown Live to focus on his work with at risk kids through Beyond Sport and Beyond Rugby Bermuda.
JBL noted he would still work for WWE in a more limited capacity, including appearing on marquee shows such as WrestleMania and Tribute To The Troops.
Breaking News: WWE Confirms JBL's Replacement On Smackdown Live - Wrestlezone