OnePlus has started rolling out Android Marshmallow for the OnePlus X with the stable Oxygen OS 3.1.2 update. Apart from all the gooey goodness, you also get the October security patch on the device.
Then you also have more launcher customization with icon packs, Shelf UX improvements, native permission management and doze mode for better battery life. As with most updates, this comes with performance improvements, bug fixes along with security patches.
Here's the complete changelog:
- Android 6.0.1 Marshmallow upgrade
- Launcher upgrades
- New icon packs
- Google search bar UI customization
- New design of wallpaper picker
- Shelf UX improvements
- Long press boards to rearrange or remove
- General system performance improvement
- Settings changes
- New (native Android) app permissions
- New Alert Slider settings with more customization options
- New apps
- OnePlus Music Player
- OnePlus Gallery
- Implemented October Android security patches
- General bug fixes
Oxygen OS 3.1.2 is now rolling out as an OTA update weighing in at 760MB and should be downloaded over WiFi. If you haven't got the notification yet, just wait for a little while or you cal also flash this zip file manually.
Source: OnePlus Forums