One of probably two limousines and an enlarged battery pack could be shown:
https://www.chinapev.com/ev-2/nio/nio-to-release-150kwh-battery-pack-and-its-first-sedan-on-nio-day/
https://www.chinapev.com/ev-2/nio/nio-to-release-150kwh-battery-pack-and-its-first-sedan-on-nio-day/