Apple has begun distributing the first beta of iOS 13.1 to Developers Beta Program participants overnight. The first trial version of the first update of the new OS version will appear before the release of iOS 13.
iOS 13 had last tested Apple in the 7th beta, some features of earlier versions were no longer included. You are now returning with the beta of iOS 13.1. Apple plans to publish them as soon as possible for the presentation of the new iPhones.
The 7th beta of iOS 13 was not fully developed in everyday use in the editorial department, especially the battery life was significantly worse. Whether the release of the first beta of iOS 13.1 means that Apple sees iOS 13 with Beta 7 as final is not known.