Catching up on the thread.
A Hetfield acoustic, singer/songwriter type solo album would be incredible. Automatic buy from me.
I'd guess there might be some acoustic guitar layers on the new record, but probably not a full acoustic song.
I heard the debut of Hardwired on the radio station, they edited out the curse words in the chorus, it sounded hilarious, WE'RE SO------------ , ---------- OUT OF LUCK
I'd guess on the tour to support the new album they consistently play 5 of the 12 tracks. Probably not the same 5 every night, they'll switch it up like they did for DM but I can't see them surrendering more than 5 songs in the set list. It seems like they are under the impression they HAVE to play what they consider classics, which is a growing list.
Personally, I think the only classics Metallica feel like they need to play every night should be: MoP, One, ES, NEM. That's it. Everything else should be considered very optional.