Apple releases the first beta developers of iOS, iPadOS and tvOS 13.3.1. Also released the first beta of macOS Catalina 10.15.3. These new versions arrive a week after the release of the stable versions of iOS, iPadOS and tvOS 13.3.
These updates are available to developers in OTA mode for all compatible iPhone, iPad and iPod Touch through the appropriate menu in the settings. To download the betas you need to install the respective profiles through the Developer Center.
At the moment there is no information on any new features introduced with these new test versions. Since this is "minor update" it is likely that they will mostly improve system performance and correct any bugs present in current versions.
It is likely that one of the most important bugs fixed in iOS 13.3.1 is related to Screen Time. Apple confirmed last week that it was working on a bug fix that allows it to easily bypass screen time limits.
However, we will update the article in case significant features are reported.