It’s been 2 weeks since the release of the first beta version of iOS 12.3 . Today Apple released the second beta.
The build number is 16F5129d .
It is not yet known what exactly has changed in this update. Most likely, they corrected minor bugs and increased stability. In the previous firmware added an updated Apple TV application.
The size of the update was 400 MB. Download iOS 12.3 beta 1 can now “through the air.”