小米17 Ultra发布会官宣定档12月25日，主打徕卡影像升级

Group 1 - Xiaomi officially announced the launch event for the Xiaomi 17 Ultra, scheduled for December 25 at 19:00, featuring black and white color options [1] - Xiaomi's founder and CEO Lei Jun confirmed the official release of the Xiaomi 17 Ultra on December 18, indicating a significant product launch within the week [2] - The collaboration between Xiaomi and Leica has led to a revolutionary optical system, including the first Leica APO certified telephoto lens for mobile imaging, enhancing night scene quality and overall imaging capabilities [2]