Apple is releasing iOS 13.6 developer beta 2 today, even though the update was previously called iOS 13.5.5. It includes more granular control over automatic software updates in Settings.
Ios 13.5.5 RSS
After releasing iOS 13.5.1 to the general public earlier today, Apple is also releasing an iOS 13.5.5 and iPadOS 13.5.5 developer beta. As you'd expect, there are no new front-facing features.