I think it shows great promise for the new record. All these older bands want to come back to show the fans they still have it. Testament blew everyone away, and Megadeth's new record is looking to do the same. Honestly, over I would say mostly the reviews and comments on the lastest Metallica were fair. Not what everyone wanted, but better then they were given before.
I hope the new Anthrax album proves to be good aswell. and Slayer... nvm haha I won't go into them.