The new build will be the 17.1.2.A.0.314 and among the many improvements we should see a substantial improvement in performance, improved sound quality in call, better management of the touch screen and charging. There will be the usual bug-fixes.
Here is a first changelog prevalent on the web:
- Improved quality of voice calls
- Touch and improved performance
- Reload improved when the battery level is low
- Improvements to overall performance and stability
- All the latest bug fixes and enhancements
Unfortunately, we do not know if it will be also introduced the new management of the external memory card that we found also on Xperia T2 Ultra .