A mysterious Sony device has passed through the Federal Communications Commission in the USA and the timing could very well mean it is the upcoming Sony Xperia Z4.
Very little information is given in the listing leak but we do find out the device will support LTE bands 2, 5 and 7.
Sony Xperia Z4 FCC listing
The Sony Xperia Z4 was certified in its home country of Japan a few days ago and is expected to carry an LTE Cat.9-capable (450Mbps) Snapdragon 810 chipset, 5.2″ 1440 x 2560px Triluminos display, 20.7MP optically stabilized camera, water resistance, 3,400mAh battery and Android Lollipop.
Rumor has it the upcoming flagship Xperia Z4 will come with either QHD (in the US) or FHD screen resolution.
Hat tip to Ted!