A minor Firmware update has been certified for xperia T3 by PTCRB for D510X variants. Xperia T3 LTE variants (D5103, D5106) have seen the build number 18.1.A.2.32 certified which will replace the current build number 18.1.A.2.25.
Xperia T3 HSPA+ variant (D5102) has seen the build number 18.2.A.2.38 certified which will repalce the previous build number 18.2.A.2.32. Still Most of the users are waiting for the Android Lollipop update for the Xperia T3. But Sony Mobile is still didnt confirm the lollipop update for Xperia T3. But we can guess it will be available soon for Xperia T3