Sony is working on a new Android software concept build. It's believed the company is looking to revamp the Xperia UI and is currently running a beta test in Sweden. Should you reside in the region you'll be eligible to join the upcoming beta and see what the company may launch on new hardware.
The beta period will take place between July 27 and September 13 of this year. It's open to Xperia Z3 owners only, and not the "compact" version of the handset. Once the beta test has come to an end, those who participate will be able to restore their phones to current Xperia software.
Interested in learning more and signing up? Hit this link to join Sony's concept for Android.