NVIDIA started rolling Marshmallow out to the original SHIELD tablet a few months ago after getting the K1 up to date late last year, and now the company is moving the SHIELD to the latest and greatest version. The v4.1 update from 6.0 to 6.0.1 is rolling out now with emoji, security patches, and more. Well, unless you have the more expensive US 32GB LTE SHIELD. Then you're still stuck on Lollipop for some reason.
Here's the changelog for OTA 4.1 for the SHIELD Tablet.
- Supports the new Vulkan™ API for high-efficiency access to SHIELD’s graphics hardware
- Adds Android 6.0.1 changes
- Repositioned Navigation Buttons in Landscape mode & Updated Emojis
- Double Tap Power Button to launch SHIELD Camera app
- Do Not Disturb Until Next Alarm
- Support for Android Doze mode & additional power optimizations
- Adds USB MIDI support
- Adds memory compression enhancement
- Improved Wi-Fi connectivity when waking from sleep
- Fixed Compass functionality
- Fixed Gamepad Mapper issues
- Fixed issues with moving apps to SD card
- Fixed Doom 3 HDMI output issue
- Repositioned Lasso Capture icons in landscape mode
- Update to Android 6.0 Security Patch Level March 1, 2016
- Overall stability and security enhancements
This update should address some of the little issues owners have been complaining about. However, owners of the US LTE device are still free to complain about the multiple-month delay on Marshmallow in the US. It still doesn't appear to be rolling out with this update. Last we heard, NVIDIA was waiting on partner approval from AT&T. Yes, the SHIELD is an unlocked device, so I'm not sure why AT&T was allowed to get its hooks into the software.
If you have the standard SHIELD, the update should be available in the system update menu.