Android 4.3 Support 4K Screen Resolution?

We see that the Android operating system already installed on a low-resolution devices such as sailing in smartwatch to sail high resolution such as in mobile phones and tablets, including the resolution above normal FullHD (1080p) as used in the latest tablet Nexus 7 (1920x1200 pixels). For this to be possible of a mobile operating system that is used to support various pixel density of 120 ppi (LDPI / Low DPI) to 480 ppi (XXHDPI / Extra Extra High DPI).

Through further research, found the source code in Android 4.3 (Jellybean) which reveals the possibility of additional support to 640 ppi pixel density (XXXHDPI / Extra Extra Extra High DPI), which means it has support for up to 4K resolution. Does this mean we'll see an Android device with a screen density of 640 ppi? Actually, for the time being a mobile device with a pixel density of 480 ppi as used HTC arguably excessive. 640 ppi pixel density may be more suitable if used to display the Google TV interface that would be very eye candy even seen from a distance at a screen resolution of 4K.