Rian Johnson and author Jason Fry, spoke about the latter’s upcoming novelization of Star Wars: The Last Jedi in the most recent episode of The Star Wars Show.
The theatrical version of The Last Jedi didn’t feature a funeral for Han, but it still honored him, and his presence was felt throughout the film.
Of course, with The Last Jedi picking up right after The Force Awakens, I do wonder where in the story the Resistance would have had time for a proper funeral.
Jason Fry mentioned that he and the director worked together to write entirely new scenes for the book, including Han Solo’s funeral.