Sony starts rolling out its concept Android 6.0 Marshmallow build to Xperia Z3 and Z3 Compact owners17
In response to what the company refers to as "fevered interest", Sony also announced that it has opened up an undisclosed number of extra spaces. What this means is that if you act quickly, download "Sony´s Concept for Android" app from the Play Store, and sign up to test-drive the concept Marshmallow build, you might just get in on the fun.
At this point, it should be mentioned that this isn't the fully-fledged Android 6.0 Marshmallow build that Sony promised to roll out soon to a number of its devices. Instead, as the name suggests, Sony's Concept for Android is a beta program that the company uses to showcase a new, more stock-like Android UI as well as test drive new features.