Instead, smart phones will make the jump to Android 5.0 soon to Android 6.0 Marshmallow.
Page update includes devices such as the Xperia Z3, Xperia Z3 +, Xperia Z4 Tablet, Xperia smartphone Xperia C4 and C5, Xperia Ultra, Xperia M4, and M5 Xperia. On the support page for all of these devices are now listed Android 6.0 Marshmallow as the next version of the operating system, they will receive.
Given the fact that 6.0 is already running, it is logical that Sony decided to skip 5.1.1. If Sony is working on Android 5.1.1 update for these devices, and only then started to develop Marshmallow, I do not know how late would place his release. Most likely, this would not happen in the next year.
Whatever it was, now the owners of the device from the list can breathe a sigh of relief and not have to worry about the fact that smartphones have not received Android 5.1.1.