https://wccftech.com/download-ios-12-beta-6/

It’s live. iOS 12 Beta 6 is now available for download right away. As you can expect, it packs more bug fixes and performance improvements.

We’re at the point where Apple is done adding features to iOS 12, instead it has turned its focus towards polishing what’s already there. This means that if you go ahead and download iOS 12 Beta 6 right now for your iOS device, you’ll be welcomed with even more stability.