The Wear version on the watch is bound to the firmware on the watch. It can't be updated separately, and doesn't have anything to do with the version of the Android Wear app on your phone. Wear 1.4 == Android 6.0, Android 6.0 == Wear 1.4. You'll get Wear 1.4 on your watch once you also get Android version 6.0 (I don't know the build number, but it will start with "M").
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