Yes, they switched back to wood but not kielwood.
One of the reasons to stay with wood is if you don't like to use a glove, with kielwood you need to use a glove (Yes I know there some out there who use kielwood and cf without a glove but they are the exceptional), Kielwood maybe smooth but not as slick as regular wood or CF and it catches my skin of the bridge hand. CF is the smoother and slickest but catches dirt and sweat fast and gets sticky and just wiping it down with a towel like standard wood doesn't work, got to get those alcohol wipes out and it's just a hustle during play that I just go for the glove.
I go back and forth between CF and LD wood when it matters like in a league or a tournament, and once in a while my kielwood or just standard maple when I just like to fool around.
Lately I'm using my old trusted 314-2 shafts more, I think that I just prefer to avoid the glove.