Sony will shortly release Android 4.4.4 KitKat to the Xperia E3. Firmware build 18.5.A.0.26 can already be downloaded through XperiFirm for the D2202 HSPA+ variant. The update isn’t rolling publicly yet, only the “internal” versions are currently available to download. There doesn’t seem to be too much that has changed in the update. The FTF can be downloaded below (at your own risk), but if you have already tried the update let us know your thoughts below.
DOWNLOAD FTF: Xperia E3 – D2202 (18.5.A.0.26)
Thanks Jozef and Sergio!