Sony Xperia Z5 Premium successor could be showcased behind closed doors at MWC 2017

The so-called Sony Yoshino that leaked recently is said to pack a Qualcomm Snapdragon 835 processor and a stunning 4k display. If Sony introduces the flagship later this month, it might not be able to put it on sale until after the Galaxy S8 hits the shelves in late April.
Instead, Sony will unveil at least four other Xperia mid-range Android smartphones, which are only known by their codenames: BlancBright, Keyaki, Hinoki and Mineo.
The latest rumor concerning a Sony Xperia Z5 Premium successor certainly comes in line with the recent reports claiming the Snapdragon 835 chipset won't be commercially widely available until after the end of April. That if Sony wants this CPU inside its flagship, of course.
source: @Ricciolo