Sony Xperia Z5 Premium was announced durning this event IFA 2015.
Its new Z5 lineup generated a huge amount of interest of press and people, as Xperia Z5 will be first phone to have 4K display.
That feature may looks more like a gimmick than a truly useful thing, but it is a step foreward we need right now. Aside from Z5 Premium, the world will see premiere of Z5 Compact and regular Z5. That, along with the slightly bigger display size and the fact that the Z5 Premium offers just about everything the Z5 does and more.