The HSPA+ model (D5102) has seen version number 18.1.A.2.32 certified versus the current version (18.2.A.1.18). There is a chance that this new update could signal Android 4.4.4 KitKat on the Xperia T3, but we’ll confirm either way once the updates start to roll.
Xperia T3 build number 18.1.A.2.25 certified for LTE variants (D5103, D5106)
Xperia T3 build number 18.1.A.2.32 certified for HSPA+ variant (D5102)
Thanks dif wwh!