While all the Sony Xperia series smartphones getting lollipop update, the device that hasn’t received the update till to the date is original Xperia Z, which was launched back in 2013. All the other Xperia devices Z1, Z2 and Z3 received the update in the early 2015.
@JVNML13 sorry please disregard our tweet before, Lollipop update for Xperia Z will start rolling out by next week
— Sony Philippines (@SonyPHinc) May 4, 2015
Sony Philippines while replying to a user on Twitter confirmed the Lollipop update for the original Xperia Z, which will start rolling out by next week. Recently, the Android 5.1.1 Lollipop is rolled out for the other three devices Xperia Z1, Z2 and Z3. The Android 5.0 Lollipop has some bugs that are fixed in the 5.1.1 update, and it also acclaimed as the most stable Lollipop update ever.