Experimental Android 5.0 Lollipop AOSP builds are currently available for the Xperia L and Xperia Z. The whizz kids over at XDA have Lollipop custom ROMs for both devices. The Xperia Z has most features working for it, whereas the Xperia L port does not have working Wifi, Bluetooth, RIL and GPS right now. Both are early builds, so expect don’t expect everything to run smoothly. If you want to give them a try hit the source links below.
Android 5.0 Lollipop AOSP port on the Xperia L
Android 5.0 Lollipop AOSP port on the Xperia Z
Thanks Ben, lpchaz, Mirko and Ryzalansav!