There is a new Marshmallow update (version B571) available for the European Huawei Honor 6 Plus PE-TL10 smartphone. This firmware is based on EMUI 4.0.1 and comes with June security patch.
Download Honor 6 Plus B521 Marshmallow Firmware [Europe]
Here is the final B521 Android 6.0 Marshmallow firmware update for the European Honor 6 Plus (PE-TL10) based on the new Emotion UI 4.0 interface.
Huawei Honor 6 Plus (TL10) B510 Marshmallow Firmware [Middle East]
The stock Android 6.0 Marshmallow firmware for the Huawei Honor 6 Plus (Pine-TL10) is now available to download for Middle Eastern countries.