The Android L keyboard app was launched just hours ago by Shen Ye, who himself is an XDA TV producer. We’re not sure if it’s compatible with Android Jelly Bean devices, but it certainly works with those running KitKat (we tested it). Update: it should be compatible with any device running Android 4.0 or later.
After you download the Android L keyboard, follow the instructions from its Google Play description to use it. The new keyboard doesn’t feel too different from the standard KitKat keyboard, but it does look nicer - at least in our eyes.
The keyboard is part of the Android L developer preview that's been made available only to Nexus 5 and Nexus 7 owners. Let us know if you’re downloading it (from the source link below), and if it works as you’d expect after the installation is complete.
source: Google Play via @shen_ye