So the wait for the older Xperia Z series users is over. Today Sony Mobile has rolled out the much waited Android 5.1.1 Lollipop for the older Xperia Z series with the build number 10.7.A.0.222 which was even didn't certified over PTCRB. So far the Update has landed for Xperia Z (C6602, C6603 variants), Xperia ZL (C6503, C6506 variants), Xperia ZR (C5503 only) and Xperia Tablet Z Wi-Fi (SGP311, SGP312) and Xperia Tablet Z LTE models (SGP321 only).
So if you have installed the Update let us know whats interesting. Update is live on some region as shown in the below image.