The Huawei Honor 6 will now get the Android 6.0 Marshmallow. The OTA has recently been started rolling out to Indian market and even some users are getting the notification. The update weighs around 700MB with the build number of H60-L04C675B810.The update, however, is in slow roll out so may not reach all devices early, more specifically the locked units will receive it later.
Check your phone for the notification of update on and off.