Microsoft has today announced its new firmware update for Lumia devices called Lumia Denim, and will include a new hands-free Cortana which can be activated by simply saying "Hey Cortana" whilst the phone is inactive.
Lumia Denim will also introduce improvements to the Lumia Camera app. The app will launch "wicked fast" from startup and when taking photos and video. The app also supports 4K video recording, too!
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