According to Sony Xperia Blog, its Xperia Lounge app "accidentally" released the appearance and some details of the Xperia Z4 tablet in advance.

Seen from the leaked pictures, the Xperia Z4 tablet is still Sony's traditional family Facebook, and there are not many surprises on the plug-in. Also disclosed was the release date of the machine on March 3 (during MWC 2015). The most important thing to be careful about is that the tablet will use 2K screens. After all, there are not many processors that can feed 2K screens in service. High resolution screens will cause great pressure on both CPU and battery life.