The text in the trailer "Hang on......for one last ride" doesn't give much hope for a 4th installment of the series.
Hope i'm wrong and we get at least one or two more, this one looks like a blast.
Peace
Lerner has already stated that they want the next EX film to take plae in Cuba if Fidel Castro is still live, and if he dies before they start filming, the tory line would just change, simple as that. On top of that Lerner also said (a week ago or so) that he want Pierce Brosnan for the nex EX film as well .. So I'm sure there will be a next EX film
The tag line in the trailer "hang on for one last ride* could just mean that it is the last ride with some of the old school guys, and that a new team (including some younger people) will be brought in. At the same time I also think it is just an marketing trick. I cant imagine Lerner passing up on EX4 if he knows that it will bring in alot of bucks.