A new firmware update with build number 28.0.A.8.245 has been certified by the PTCRB for the latest Sony flagship devices – the Xperia Z3+ and Xperia Z4 Tablet. This compares to the newest current version with build 28.0.A.7.31. This is unlikely to be the Android 5.1.1 update give the small change in build number, however we do expect this to bring a fix to the Stagefright exploit We’ll let you know once it starts to roll.
Thanks Haziq and Rimaz!