About a month after the previous one, thanks to the Christmas holidays, Apple has recently released to developers the second beta of iOS and iPadOS 13.3.1 which can be installed in OTA mode on all iPhones, iPads and iPod Touch compatible through the appropriate menu in the settings. To download the beta it is necessary to install the respective profiles through the Developer Center. Beta two are also available for macOS Catalina 10.15.3, watchOS 6.1.2 and tvOS 13.3.1.
At the moment, there is no information on any news introduced with this new test version. Being a "minor update", it is likely that it will mostly improve system performance and correct any bugs in the previous version. In particular, several users complained of a problem on the iPhone during the hands-free calls that generated an annoying echo for the interlocutor.
One of the most important bugs fixed in iOS 13.3.1 is likely to be related to Screen Time. Apple had confirmed that it was working on a bug fix that allows you to easily get around screen time limits.