One day after leaving macOS Mojave 10.14.6 beta 5, Apple today made available to developers the macOS Catalina 10.15 beta 4 (compilation 19A512f), the iOS 12.4 beta 7 (16G5077a) and the watchOS 5.3 beta 6 (16U5569a). Yes, she has mixed one of the new systems that will be released in September / October with updates of the current ones, which will probably come out later this month.
The big news of iOS 12.4 will be support for the Apple Card, which is about to be released in the United States this seventh beta has even been made available simultaneously to developers and members of the Apple Beta Software Program. WatchOS 5.3 is a minor update, with general improvements and bug fixes.
If something new comes out in the fourth beta of macOS 10.15, we'll let you know here on the site.
To those testing these new operating systems, comment below on how the new builds look. ?