A couple of weeks after the opening keynote of WWDC 2019 where Apple released the first developer beta of iOS 13 and iPadOS, it has now released the second developer beta of both operating systems. The new builds of both OSes should come with fewer bugs and stability issues than the original build.
These builds are still strictly meant for developers and until and unless you want to get into the hassle of flashing IPSW firmware file via iTunes, you should stay away from it.
To get the second beta of iOS 13 or iPadOS 13 on your iPhone or iPad, you must first install the developer beta profile on it. Without it, you will not get the beta 2 OTA update on your device. Registered developers can get the beta profile from their App Store account. You can also get the beta profile link from the articles below.
iOS 13 and iPadOS come with a number of new features including a system-wide Dark mode, improved multitasking, new system gestures, improved Apple Maps, and more.