By now you’ve watched the Infinity War trailer a hundred times, and if you were lucky you got your tickets for opening day (just like I told you they’d go on sale today). This is just speculation, but it’s very possible that Infinity War is going to end with a famous cliffhanger taken right from the comics, and there’s evidence to back this up.
While Infinity War is heavily pulling inspiration from Hickman’s amazing run on Avengers/New Avengers/Infinity a few years ago, it’s also obviously drawing from the classic Infinity Gauntlet event in 1991. At the end of the first issue of that event, Thanos has the Gauntlet and with a snap of his fingers he balances the universe and wipes out half the life in the universe. This action was even alluded to in the trailer.
It’s very possible that’s how Infinity War is going to end, leaving audiences hanging for a whole year and dying to watch Avengers 4 in May 2019 to see how the remaining heroes reset what Thanos does with the Gauntlet. And there’s evidence to support this based on the two movies that will come between the Avengers films.
Ant Man & The Wasp is set before the events of Infinity War. Likewise Captain Marvel is set long before the movie, with its story set in the 90s. This means after Infinity War, you will not see how the MCU reacts to it until the following May when Avengers 4 comes out. This is unlike anything Marvel has done and it’s the perfect way to build anticipation for the fourth Avengers movie. People will be shocked to see half of the heroes wiped out in one snap of the fingers, and they’ll line up for part 2 to see who comes back.
Some people online have been suggesting that Thanos doesn’t even get all of the Infinity Stones in this movie and the Soul Stone is being saved for Avengers 4. Based on some leaks that’s not true, and it also shows why people on social media and message boards don’t write these stories.
Based on Marvel’s movies that are coming out between the two Avengers films, and some leaks that have come out, it really looks like Thanos could succeed in his mission setting up an epic resolution in Avengers 4 in 2019.