The first beta of iOS 13 and iPadOS was not released through OTA, but if you own a Mac computer, you can still upgrade with firmware to experience it first.
NOTE BEFORE USE:
To experience the first iOS 13 beta first, you need to use the updated Mac computer to macOS 10.15 Catalina (beta) or install Xcode version 11 software (beta) before proceeding upgrade with firmware using iTunes.

- Download Xcode 11Â (Google Drive)
- Beta profiles macOS 10.15 Catalina
Make sure the device in use is in the list of supported upgrades to iOS 13 / iPadOS
FIRMWARE IOS 13 BETA
- iPhone XS firmware iOS 13 beta
- iPhone XS Max firmware iOS 13 beta
- iPhone XR firmware iOS 13 beta
- iPhone X firmware iOS 13 beta
- iPhone 8 Plus firmware iOS 13 beta
- iPhone 8 firmware iOS 13 beta
- iPhone SE firmware iOS 13 beta
- iPhone 7 Plus firmware iOS 13 beta
- iPhone 7 firmware iOS 13 beta
- iPhone 6s Plus firmware iOS 13 beta
- iPhone 6s firmware iOS 13 beta
FIRMWARE IPADOS BETA
- iPad Pro 2018 (11 & 12.9-inch) firmware iPadOS beta
- iPad Pro (10.5 inch) firmware iPadOS beta
- iPad Pro 12.9-inch (2017) firmware iPadOS beta
- iPad Pro 12.9-inch firmware iPadOS beta
- iPad generation 5th & 6th firmware iPadOS beta
- iPad Air 3 firmware iPadOS beta
- iPad mini 5 firmware iPadOS beta
- iPad Air 2 firmware iPadOS beta
- iPad mini 4 firmware iPadOS beta
- iPad Pro 9.7-inch firmware iPadOS beta