It appears that the update is rolling out in stages and right now selected users in Taiwan, Spain and Finland are getting it as a part of some sort of pilot program. If they don’t face any issues with the new firmware then we can expect their compatriots to join the fun, with global availability of the update to follow shortly after.
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Nokia Cyan extends with Creative Studio app, Bluetooth 4.0 LE support and ingrained display controls. There are even more updates, but those are hardware specific and won’t work on all devices.