The good news is, there isn’t any mid-credits or end-credits scene to wait for (be sure to kindly inform the people stubbornly waiting around as you head for the exits).
Yes, the long-running Marvel tradition will be broken, just like your spirit after watching whatever traumatic stuff is bound to go down.
However, there is something! In lieu of a credits scene, there is a sound. And that sound appears to be… some kind of metal clanging.
We repeat: End of “Endgame.” Metal clanging sound. The possibilities are endless. Let the theorizing commence!