But if you're trying to plan your viewing anyway, I've made a guess at when "One Battle After Another" will come to streaming services below. One Battle After Another | Official Trailer 2 - YouTube Watch On"One Battle After Another" hit the big screen on Friday, September 26. Looking again at Warner's previous releases, you can see that HBO Max typically gets new Warner Bros. movies around two and a half months after their theatrical debut. Of course, this is all speculation right now, as Warner Bros. has not confirmed a "One Battle After Another" streaming date yet. Check out our round-ups of the best movies on HBO Max and the best HBO Max TV shows for tons more watchlist-worthy picks.