Massive spoilers for Avengers: Age of Ultron. The mid credits scene for Avengers: Age of Ultron is a big one. It sets up Avengers: Infinity War Part 1 & Part 2, while also giving us our best look yet at the Infinity Gauntlet. This is both interesting and exciting for all fans.
In a weird twist, the Infinity Gauntlet we see Thanos retrieve is not the only one that exists within the Marvel Cinematic Universe. The Infinity Gauntlet first appeared inside of Odin's vault in Thor. Kevin Feige has confirmed that the gauntlet inside of Odin's vault and the gauntlet that Thanos retrieves from another vault are not the same one.
Avengers: Infinity War Part 1 hits theaters on May 4, 2018, and will begin filming late next year.