Yes he does
Although I agree there shouldn't be a 4, I would deffo support it if they did go ahead with one.
It was rumoured not so long ago that they was thinking of doing a 4 without MJ being in it, or just as flashbacks.
Still have Lloyd, but was going to be set something around Doc's children or something who have to go back to the father in some time.
Something along those lines.
BTW, I think I read somewhere that the Cartoon series is suppose to be out on DVD soon.