Sony hasn't always been the best at updating its phones, but the company does have a commitment to AOSP unlike most others. It contributes a lot of code to Android, and developers are encouraged to tinker with unlocked devices. In fact, Sony has just announced support for AOSP on the Xperia E3 and Xperia T3, meaning all Qualcomm-based phones from 2014 can run pure Android with very little hassle.
Here at IFA 2014 in Berlin, Sony is announcing new entries to its Xperia smartphone line at all levels. The flagship Z series, last updated only six months ago at Mobile World Congress, has been bolstered with the Xperia Z3. This device is the tip top of Sony's line, though in terms of sheer hardware it's an evolution rather than a revolution. The 5.2-inch 1080p screen, Snapdragon 801 processor (bumped up to 2.5Ghz), and 20.7MP rear camera are similar to the last iteration, but the body is much thinner at 7.3mm.