Ron Howard, director of the upcoming Han Solo standalone film, recently was asked about making a sequel to his 1988 film Willow. He surprisingly answered that he recently worked on a current project with Warrick Davis, which subtly reveals that he will be joining the cast of the standalone Han Solo film. Currently it is unknown what role he will play in the film, however it is nice to see a long time veteran to play a role in the film. No other details are confirmed at this time so stay tuned for updates. The Han Solo standalone film is set to premiere on May 25, 2018.
— Ron Howard (@RealRonHoward) July 26, 2017
Source: Ron Howard