You can now download iOS 12.3.2, which brings a bug fix for iPhone 8 Plus users when it comes to Portrait Mode:
iOS 12.3.2 resolves an issue that could cause Camera to capture Portrait mode photos without depth effect on some iPhone 8 Plus devices.
You can update your iPhone 8 Plus by going to Settings > General > Software Update.
No other major features are part of this release, aside from the usual bug fixes and security improvements. This update is only for the iPhone 8 Plus.
Here’s the direct download for iPhone 8 Plus users:
Apple currently has released iOS 13 beta for developers, with the final release set for this fall.