Sony Mobile has released Android 7.1.2 for the Xperia X Concept for Android programme as promised. The update includes Bluetooth connectivity improvements and battery usage alerts. Sony has also improved faster camera start-up times in this update.
As part of the process to get Android 7.1.2 to Xperia X Concept users this early, some compromises had to be made, and one of these is that the Setup Wizard only supports Wi-Fi right now (this will hopefully be fixed in a future update).
The update is live right now on the Experimental track of the Xperia X Concept software. If you own an Xperia X device and want to get involved, then head over here.