I don’t know why they moved this up, but if they’re really shipping it on Tuesday, just five days from now, I don’t understand why they’re releasing 13.0 at all. The iPhones 11 already have it installed, of course. But for upgrades I don’t see why Apple is releasing it.
The release with the 11 is perfect face saving. It's not like iOS 13 was skipped. But it's not worth it in bandwidth, user frustration, messaging, etc to release a version for five days. Madness.
The reason this is a fail is because there's apparently no process in place to skip the version. What world requires you to ship bad software when a fix is coming out of the pipe right behind it?