Apple recently released the second beta version of iOS 13.3.1 and iPadOS 13.3.1 for developers.
The beta 2 of iOS 13.3.1, iPadOS 13.3.1 and tvOS 13.3.1 can currently be downloaded only by developers registered in the Apple Developer program. At the moment there seem to be no particular changes, if not limited to fixing bugs and improving performance.
One of the fixed bugs is likely to be related to Screen Time. Apple confirmed last month that it was working on a fix for an iOS bug that allowed kids to easily get around the screen time’s communication limits.