The new Sony Xperia Z5 series will support the same manual camera settings through the Camera2 API as the Xperia Z3+/Z4. This means that apart from RAW support, the Xperia Z5 will support manual camera settings for focus, white balance, ISO and shutter speed. So it’s good news that Sony has most settings open and maybe it will open up RAW too over time.
Thanks Basil!