For those wondering about what's next, my friends with web trackers say that they are seeing 13.2.1 builds in their tracking. So it would appear that it will be before a full 13.3 build. 13.2 (for better or worse) looks to be about done, with a release in the next few days.
I think a note about the pace of iOS 13 is in order. We have never seen this pace before. Over the last month we saw 5 publicly released builds in less than 30 days. Some say this a good thing. I don't think so. It reflects what Apple thinks about the quality of this release. Not good. I am afraid that we will not see iOS 13 ever return to the quality of iOS 12. It seems destined to me to repeat iOS 11. OK, but not really up to Apple's standards-or ours.