A quick heads-up to let Sony Xperia M2 (D2303, D2306) and Xperia M2 Dual (D2302) owners know that an incremental firmware update has been certified for both devices. The Xperia M2 has seen build number 18.3.C.0.39 certified by the PTCRB (Android 4.4.2 KitKat was introduced with build version 18.3.C.0.37).
The Xperia M2 Dual certification is for build number 18.3.B.0.32 (KitKat was introduced with build version 18.3.B.0.31). As you can tell these are very small updates from the previous updates that first brought KitKat to these devices. If these updates go live, expect it to bring only marginal changes.
Xperia M2 build number 18.3.C.0.39 certified for D2303 and D2306 variants
Xperia M2 Dual (D2302) build number 18.3.B.0.32 certified
Thanks @llibell and Levered!
