ZTE is the Chinese manufacturer and they also have a plan to release the new Nubia handset in MWC 2015. This will be the new member going to add in Nubia family and the new member called ZTE Nubia Z9.
This seems to be the large size device and will come in premium look. There is no other information available about the device but one thing is confirmed that the device has a solid metal frame and it is also expected that the frame of the device is coated with glass cover. According to the leaked information the Nubia Z9 has 5.5 inches display but this is only the assumption and we can not say anything confirmed about the device until the device will not get the official confirmation.
It is also expected that the handset is featured with Qualcomm Snapdragon 810 system on chip but there is a chance that company might use Mediatek MT6795 octa core system on chip for controlling the manufacturing cost.
Besides this information there is no other info available about the device but if the ZTE Nubia Z9 will come with the specs stated above it will be the most powerful handset of ZTE.
Source (Translated from Chinese)