Hello!
rikwang 1. We can confirm the EOS date is December 2024. We've had a look at the doc, and can only see December 2024 specified. Feel free to send us a screenshot of where you might be seeing August 2024 so we can share this feedback with the appropriate team to rectify.
2. For devices without GMS access in China running Android 14 or earlier, we will continue allowing device administrator enrollment and will maintain limited support after EOS.
NickK890 As mentioned by Graham Walsh in an earlier comment, we have published a blog that should be helpful in transitioning: Moving Teams Android Devices to AOSP Device Management. Hope this helps!
timirantanen At this moment in time the end of support is effecting Intune's ability to provide updates, bug fixes, or technical support for the devices under device administrator management. Basic Mobility and Security typically relies on different management frameworks, rather than the Android device administrator model.