Never heard of an Android device called 'KitKat'. It's actually v4.4 of Android itself, and not a hardware product. There are plenty of Android based media players that run KitKat though (the mobile version of the O/S, and not the official 'Android TV' version that you can get on the Nexus Player and nVidia Shield).
Android 4.4 (API Level 19), also known as "KitKat", was released in late 2013. KitKat offers a variety of new features and improvements, including: User Experience – Easy animations with transition framework, translucent status and navigation bars, and full-screen immersive mode help create a better experience for the user.
If you're not a programmer, or you don't have one of the supported devices, technically speaking, you should still be able to run KitKat on many older devices. That's because Android 4.4 can run
Google chose October 31st, Halloween, to take the wraps off its new Nexus 5 smartphone and Android 4.4 KitKat, the latest version of its mobile operating system. Google's latest Android flagship
Over the years, Android has introduced various versions, each offering improved features and performance. Two of the most widely known versions are Android KitKat and Android Jelly Bean. But according to recent Google statistics, Android KitKat is gaining traction and catching up to Jelly Bean in terms of adoption rates.
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is android kitkat still supported