How to Get KitKat Launcher on Any Android Device
Android 4.4 (KitKat) is only available for Nexus 5 (for now), and if you want to get KitKat launcher on your Android devices (running Jelly Bean, ...
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Android users with ICS and Jelly Bean can type and write some text to display on the lock screen. To customize or add owner info to lock screen on nexus 4 do as follows:
1. Open "Settings" app
2. Go to "Security"
3. Tap "Owner Info"
4. Type the text and mark "Show owner info on lock screen"
Update: If you have already updated to Marshmallow, look for the Lock Screen Message option, instead of the Owner Info.