China has announced a Jupiter mission in their future plans. Now according to The Planetary Society article, it might include a Callisto Landing. Or it might be several flybys Io.

https://www.planetary.org/articles/j...ubsrc=20210115

China opened the 2020s by bringing samples back from the Moon and sending its first mission to Mars. The country’s space agency hopes to end the decade by launching a spacecraft to Jupiter that could include a lander bound for the moon Callisto.

China has hinted before that it would like to send missions to the outer planets. Chinese scientists, working with European collaborators, are now solidifying plans for two distinct Jupiter mission concepts, one of which will likely move forward. Both seek to unravel mysteries behind the planet’s origins and workings using a main spacecraft and one or more smaller vehicles.