One of the biggest changes in the UI of Android Lollipop is in the all new keyboard. It gets the Material UI upgrade treatment. The biggest difference here is a lighter more minimal theme. The keyboard actually operates pretty much the same as it has in previous versions of Android. This keyboard has actually been available since the first Android L preview build was released at Google I/O in June, however it was a bit more difficult to install and did require root. Now the installation has been simplified. If you can install an app you can install the new Lollipop keyboard. Head to your settings, then security settings, and then enable "unknown sources". Head to the link below for the APK download!
Via XDA