Sony has listed two variants of the Xperia Z Ultra on its website, highlighting their imminent release. The first is the SGP412, which we have seen before and is believed to be a Wi-Fi only version of the Xperia Z Ultra. All other features are believed to be the same, so expect this to be a cheaper version of the Xperia Z Ultra for the masses.
The second is the SOL24, which is heading to au by KDDI in Japan. The device unexpectedly went up for pre-order in the last few days by Rakuten and then was subsequently pulled. Given these leaks, we’d expect an announcement within the next few weeks.