Sony Mobile has released an updated for the single sim variant of the Xperia M4 Aqua with a build number 26.1.A.1.128 over the previous build number 26.1.A.1.112. This Update with build number 26.1.A.1.128 has been certified for variants E2303, E2353, E2306 previously. but it is still rolled out only to E2303 variant carriers in Hungary and South Africa and internally (Commercial and Journalists). See the Image below
And for the dual sim variant of Xperia M4 Aqua (E2312, E2333, E2363) the update will be released soon. beacause the update with a build number 26.1.B.1.121 has been certified for the variants E2312, E2333, E2363 over the previous build number 26.1.B.1.85.
So stay tuned with XperiBlog to know when the update starts to roll.