Apple has seeded the twelfth beta of iOS 12 to developers, Beta 12 comes after Apple released beta 11 on August 27th.
This update fixes an alert issue that popped up in iOS 12 beta 11.
Currently iOS 12 and watchOS 5 has brought a host of new features which we have previously covered and is expected to release the final version to the Public in September.
Since the release of iOS 12 and watchOS 5 beta we have seen the several changes which you can read about here.
Apple also has a public beta programme which should be receiving a beta update shortly, as always if anything new is found we will update this article.