Earlier today, Apple has released the iOS 16 Beta 8 developer preview (20A5358a) and Public Beta 8 with the official release of iOS 16 expected to arrive very soon.
This release has provide some bug fixes and performance improvements with great focus on software stability instead of implementing new features.
Apple has also previously added battery level indicator on battery icon on the top right.
iOS 16 update does not add too many changes in features with upgrades focus on customization on lock screen, new focus mode, pictures, messages and SharePlay feature improvement plus the support of joystick and Apple Pay Later features.
Along with Apple launch even on 8th September, we should be able to see the release of iOS 16 which marks this Beta 8 potentially the last beta for iOS 16.
To update your system to Beta 8, download from Settings > General > Software Update.