Sony's latest and greatest is getting a little bit better today as an update for the Xperia Z2 begins making its way out to devices. The Z2 was already on Android 4.4 KitKat, so there's no change on that front. The update (version 17.1.A.2.55) does include a number of notable tweaks and improvements, though.
Here's the changelog for the new software build.
Improved camera performance & function with faster start time and better auto focus
Enhanced in-call audio with fine tuned noise cancellation
Improved FM radio function
Graphics improvements with smoother scrolling and image movement
Improved stability with the latest bug fixes and enhancements
No new phone is completely without bugs, so it's nice to see Sony taking care of business.