Just to let you all know I have received the new firmware update on my Huawei Mate 9. 

It has installed B138 as per screenshot. The differences are – 

– Improves lock screen controls for third party players e.g. Pocket Casts

– Fixed screen sensitivity 

– Improved power consumption

– Bug fixes 

– In the settings there is now an option to enable VoLTE calls i.e. use 4G LTE Data to place HD calls

– Security update has improved from 1st November 2016 to 1st December 2016