A new firmware update is now rolling for owners of the Xperia C3 and Xperia T2 Ultra handsets (including their dual SIM counterparts). Build number 19.3.A.0.472 likely fixes a few bugs and improves performance over the first Android Lollipop update that rolled recently (19.3.A.0.470). This is a global update that is live across many variants of each handset across many regions. Check out PC Companion to check if this update has landed for you.
Thanks ujas!