References to Android 5.1 were spotted as far back as late December 2014. Rumours hinted that the latest iteration of Lollipop would launch as early as Q1 2015. Android 5.1 was later spotted running on a Google Nexus 6 with the build identified as LMX72H, suggesting that development was well underway. In a somewhat surprising development, Android 5.1 has now begun to ship on Android One devices in Indonesia (with build LMY29F).
Further confirmation of the new version of Lollipop can also be found on on Google’s own Android One Indonesian page:
Introducing Android One. Fast and responsive smartphones running the latest version of Android, Lollipop 5.1.
An official changelog has yet to be published but an earlier report listed the following:
- Silent mode added after missing on Android 5.0
- General improvements in system stability
- Improved RAM management
- Fixes for sudden app closures
- Improved battery management
- Excessive consumption of network devices when used Wi-Fi fixed
- Issues with wireless connections fixed
- Problems with Okay Google function solved
- Notifications problems solved
- Some sound problems experience by certain devices fixed
- Other improvements and changes
- Changes in the Material Design color palette (after users complaints, possibly for a higher version though)
Google has yet to officially comment on Android 5.1 but an announcement could come any minute. From there, we expect that Google will send Android 5.1 to AOSP with OTA updates for Nexus devices to follow shortly after that.
Sources : Android Police // Google Indonesia