The biggest difference between the Xperia 10 II and the original Xperia 10 (apart from the Bravia Triluminos OLED screen) is in the camera setup. The new model has triple cameras, with a 12-megapixel ultra wide-angle camera and 8-megapixel wide angle and 2X optical telephoto cameras (with a 10X digital zoom). While the latter have surprisingly low resolution, low-light sensitivity should be good in theory. It supports 4K and 21:9 movie capture, though that format will be cropped on your Ultra HD 4K display.
It also excels for sound, thanks to support for high-resolution audio and yes, a 3.5mm audio jack. Other specs are more pedestrian, including the Snapdragon 665 chip, 4GB of RAM, 128GB of internal memory (with microSDX support) and 3,600 mAh battery. The Xperia 10 II will arrive in Spring 2020, but the all-important pricing has yet to be revealed.