With Goku, there isn’t much that hasn’t been already done. Bandai has already released every one of his forms, but they did show off two new Goku prototype that hasn’t been released yet and those include the Super Saiyan and SSJ2 form in the updated body. SSJ2 also comes with the halo head.
Another interesting release is a diorama of Goku’s dining table. Not sure how this will be released, but it would have been nice if they made a model of his house in the forest that folds out like Castle Grayskull from Mattel. Only time will tell!