This is the Sony Xperia Z3 Compact. Like its predecessor, the Z1 Compact, the Z3 is a smaller version of its flagship sibling. Unlike mini phones from other manufacturers (I'm looking at you, Samsung Galaxy S4 Mini), the Z3 compact keeps the same top-end specs as the flagship but packs it into a smaller, more hand-friendly body.
The Z3 Compact is due to hit stores from October, although Sony is yet to elaborate on exactly where it will go on sale or how much it will cost.
A big change this time however is the plastic, rather than metal band around the edge. I'm not keen on this change as it immediately makes the phone look and feel a little less premium than the glass and metal flagship.
There's a 20.7-megapixel camera on the back. Sony says it's been given a wider-angle 25mm lens and the sensor has been tweaked to make it much better in low-light situations -- something I'll be putting to the test in the full review.
A neat new feature is the ability to use the phone as a wireless display for your PS4 console.
The console itself will still do all the actual processing of the games, but it's able to stream that content to your phone, rather than your TV as long as you're on the same Wi-Fi network. Hook up a PS4 controller over Bluetooth and you can actually play glossy PS4 games on your phone's screen.