For starters, the phone seemingly runs on a Snapdragon 800 processor, has a 20 megapixel sensor and can record 4K videos in 4000 x 2000 resolution. The last spec seems interesting even though the aspect ratio is unusual.
Other than that, there are several changes to the UI on the phone. You can see a new clock, calendar, calculator and contacts apps. You can now place multiple Small Apps on screen at once and there is a new keyboard as well. Sony also seems to have added a new augmented reality app.
Source: GSMArena
