A prototype of purple Sony Xperia Z Ultra C6802 has been spotted with X-Reality for Mobile UI and the 14.1.B.1.493 firmware in China. It seems the unit is not for sale yet as what a label says.
Purple Xperia Z Ultra C6802 spotted with X-Reality
Original Poster at Gfan posted some pics of purple Xperia Z Ultra with new 14.1.B.1.493 firmware and Bluetooth headset SBH52. Pics confirmed that 14.1.B.1.493 firmware will definitely bring the new UI to Xperia Z Ultra including X-Reality for Mobile which was missing from Xperia Z Ultra C6802 HSPA+ version and Bravia Engine 2 is their till 14.1.B.0.475 firmware update.
Software info reads 1271-5715_14.1.B.1.493 Generic User, Global HSPA_ version.
A few days back we saw PTCRB certifying 14.1.B.1.510, 14.1.B.1.515 firmware for all version of Xperia Z Ultra.
14.1.B.1.493 firmware is expected to come officially with the launch of Xperia Z Ultra LTE C6843/C6833/C6806 versions. Hope we see it soon as Xperia Z Ultra uses are highly waiting for X-Reality to come on device.