Sony appears to be polishing firmware for its up and coming handsets. We have already seen a number of updates for the Xperia Z2 and the same appears to be the case for the Xperia E1. We only reported on a new certified Xperia E1 update a few days ago and now another build has appeared on the PTCRB website.
Firmware version 20.0.A.1.16 has been certified for the Xperia E1 (D2004, D2005) and build number 20.0.B.0.75 has been certified for the Xperia E1 dual (D2114) – the latter incorporating DTV. Both are minor revisions over the previous versions. We expect both handsets to be available across Asia and Europe by the end of the month.