I found latest xperia z1 keyboad for kitkat. i have tested it on my Ideos x5 running unofficial CM11(Blefish's ROM). I think it's very useful. Takes up less memory in the system. (google latinime: 40mb, xperia keyboard only 7mb) and very beaıtiful. Support t9 and more keyboard still.
Download the Zip file and flash it via CWM.And Reboot!!
let me know if u have any issues.