Kate Bishop also delayed.
Kate Bishop Marvel's Avengers

Delays on top of delays. That's what is going on right now with new content for Marvel's Avengers. First, we know now that the next-gen release of Marvel's Avengers will be delayed. On top of that, the Kate Bishop content will also be delayed. Kate Bishop was announced back in September and was planned for release in late October.

To be perfectly honest, the game itself should have been delayed for at least a few months while some of the more outstanding issues were worked on. The game shipped with constant crashing issues, performance issues, issues with matchmaking, and a generally boring late game gameplay loop. Though the single player campaign was generally enjoyable, I still uninstalled the game before ever finishing it due to the fear of crashing and losing all mission progress. It was especially aggravating when it would happen near the end of a lengthy mission.

It is because of these issues that Crystal Dynamics and Square Enix announced today a delay for the PlayStation 5 and Xbox Series X|S versions of the game. This goes hand in hand with the delay of the Kate Bishop content.

Moving forward, we intend to have a fixed, predictable patching cycle to ensure all new content meets both our and your high standards and has time for extensive internal testing. We know fans are hungry for new content, but delivering a fun experience is our priority. With this in mind, we’ve decided to push Kate Bishop’s Operation launch back a bit, out of October. We’re sorry for this slight delay, but we are dedicated as a team to quality first.

We’ve also made the decision to shift our PlayStation 5 and Xbox Series X|S launch to next year to ensure that we give our team the time to deliver a next-gen experience showcasing all that this game is meant to be. More details to come.
While it is admirable that the studios are dedicated to the game like this, one just has to wonder if it's already too late for the game to be saved. It has already fallen below 1,000 players on PC. Without crossplay support, that is essentially a death knell for a service game where the endgame is nothing but repetitive multiplayer focused missions.

Marvel's Avengers was released on September 4, 2020 for the PC, PlayStation 4, and Xbox One.