A new firmware update has been certified by the PTCRB for the Sony Xperia M2 (D2303, D2306) and Xperia M2 Aqua (D2403, D2406). It moves the build number from the current version (18.3.1.C.0.21) to 18.3.1.C.0.22. As you can tell, this is an incremental update so expect only minor changes/bug fixes. We’ll keep you posted if it starts to roll.
Thanks Martin!