I very much doubt it, can't see that the writers or actors would have anything to gain from making one. Frankie is trying to refocus his career around movies so it would just be one step forward, two steps back, if you get my drift. Also, they've done two-part eps. before, which are close to feature length anyway, so why make an actual movie? It seems season seven is going to be the last, so they'll concentrate on that, and then it's farewell MITM.