I wouldn't read too much in to the pushing back of delivery dates. This is probably expectation management on Subaru's part, and not an indication that there won't be any deliveries before then. My order was placed on 4/27; at the time, the sales manager told me Subaru's official delivery date was Sept 25th, but it could arrive as early as Memorial Day (that was before the recall, obviously). I think, at this point, they'd rather underpromise and overdeliver.They HAVEN'T announced that it DIDN'T restart (and that's the kind of thing they would announce).
It's unknown if that assembly line is currently building bZ4X and Solterra, or just Crown (and possibly Mirai).
The growing number of delivery dates being pushed back to December 30 isn't a good sign.
It doesn't appear any new VINs have been assigned lately.
Same story with VIN assignment; assuming that there is a fix and it requires parts, you don't know what allocation of those parts is going to fix vehicles already produced as opposed to stocking for future production.