https://broadband.forum/sony-xperia-xperia-z1-xperia-zl-xperia-ultra-xperia-tablet-android-kitkat-update-48001/
These devices are getting at least Android 4.3:
Sony Xperia ZSony Xperia Z1Sony Xperia ZLSony Xperia ZRSony Xperia Z UltraSony Xperia Tablet ZSony Xperia TSony Xperia SPSony Xperia TXSony Xperia V
These devices are getting at least Android 4.3:
Sony Xperia ZSony Xperia Z1Sony Xperia ZLSony Xperia ZRSony Xperia Z UltraSony Xperia Tablet ZSony Xperia TSony Xperia SPSony Xperia TXSony Xperia V