Android 4.4 KitKat is a version of Android. The name was announced by Google on September 3rd, and the operating system was released on October 31st. It is currently only available on the Nexus 5, but many other devices will soon receive the update. In order to be able to use the name, Google created a license with Nestle, the owner of the KitKat candy. The update was more significant than the past two updates, and brought several new features.