I was talking to toygeek about this very recently. As I understand it, there are currently no GB toys in production because there isn't a license available. If Sony/Columbia doesn't offer a license, nothing can be made.
I'm not sure of the legality of making toys based on the 88MPH character designs, but I think either Bill Murray or Dan Ayckroyd objects to action figures in his likeness, so there probably wouldn't be a movie figure line unless a prospective licensee can produce a test sculpt that the actor likes enough to agree.
88MPH is, as I understand, quite a small company, and so probably wouldn't be able to undertake production of figures themselves.
Feel free to correct me if I goofed. Especially toygeek