The Lumia Cyan update is hitting more devices each day, and a big chunk of those are 'country variants' aka CV. Country variants are non-carrier phones, but even though they are SIM unlocked, they still have localization including default language, preloaded apps pertinent to that region and other network changes. As such, there is no such thing as a generic Lumia Windows Phone, because Hong Kong, Mexico, Thailand, Norway, and others all have their own 'country variant' for each Lumia model.
The Lumia country variants are widely eligible for the Lumia Cyan update, at least for the Lumia 625, Lumia 925, Lumia 1320 and Lumia 1520. However, not all of CVs are yet cleared, leading to confusion amongst readers who proceed to force-downgrade their phones to 8.0 in order to get the non-existing update.