Haha! I know that when artists try to change people don't like it. The crowd always wants the old stuff and what they are used to. The artist, however, is never satisfied.
I had a dude call me to play some tracks for his record and we used to be in a band around 10 years ago. He liked what I played, but was disappointed that I don't sound like I did 10 years ago... better drums and, in my opinion, better feel and technique. Even though I like myself better now, you aren't going to convince everyone else it's good. I can relate...
I'm sure the next record will be somewhere in the vicinity of VHIII and from what he's said about new stuff, "it's not exactly 'bang your head against the wall' kind of stuff" and he may be using a hard-tail for things. But tone-wise, the howly midrange of his Fender Wolf should be an interesting pairing with his "plexi" crunch channel on the 5150III, so maybe some odes to the old sound will be there.