I checked this yesterday when I read the post, but I wasn't sure if I interpreted the information right. The Arizona 511(?) website didn't show any closure for AZ67. Can we assume it's open if it's not labeled closed?
The grca website shows this:
mid-May to mid-October roads are open. visitor services and facilities are available.
mid-October to mid-November roads are usually open, check with Az Dept of Transportation. no visitor services and facilities.
mid-November to mid-May roads are closed to vehicles, gate is locked at entrance station. no visitor services and facilities, camping with backcountry permit only.
I do know that in the first line mid-May and mid-October mean exactly on the 15th of the month, regardless of the day of the week it falls on. That's determined by NPS. But I don't know if mid-November means exactly the 15th. And that's determined by ADOT, I think. But now it's getting really close either way.