https://wccftech.com/download-ios-12-4-beta-1-now-available-for-iphone-ipad/

You thought Apple would slow down, but nope. iOS 12.4 beta 1 is now available for all registered developers with an iPhone or iPad.

iOS 12.3 opened the gates for an all-new TV app which Apple showcased at its special event a while back. And now, the company is already working on the next big update for iPhone and iPad users, which is iOS 12.4. But right now, it is available for registered developers only and only those with a paid account with Apple can go ahead and download the beta immediately.