The official DP1 release notes state that the following features will be introduced in Android 15:
- Privacy Sandbox
- Health Connect
- File integrity
- Partial screen sharing
- In-app camera controls
- Dynamic Performance
- Sensitive notifications
- Notification cooldown
However, enthusiasts have discovered the existence of other under development features that may be released in later developer preview versions, such as the reintroduction of lock screen widgets, which were introduced in Android 4.2 but later removed in Android 5.0. Other such features include battery health determination, app archiving, voice activation, private space and app pairs and an improved multi-tasking/windowing in desktop mode.
The release of DP2 brought improved compatibility with satellite networks, improvements to the built-in PDF reader and support for app archiving.
The release of DP2.1 brought apps being able to scale edge-to-edge and draw translucent system bars on the top and bottom of the screen, OS-level support for app archiving and unarchiving on third-party app stores, better braille support, end-to-end encryption for contact keys, and new developer features.
Other improvements included a redesigned authentication panel, improved privacy and security settings, a new volume panel, Predictive Back and Bluetooth audio fixes.
Alongside platform stability, the Stable Version added a redesigned credentials manager and the deprecation of WebSQL.
Android 15 adds support for ISO 21496-1 gain map HDR image format standard, backwards compatible with SDR displays. It is encoded/decoded simultaneously with the Ultra HDR standard. This format is also supported by Apple starting with iOS 18 and continuing in iOS 19, allowing for true cross-platform HDR image compatibility between Android and iOS devices.
Android 15 is based on Linux kernel version 6.6, although some devices still run earlier versions underneath (including versions 5.15 and 6.1 on most Google Pixel devices).
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