A Marathon Development Update has word from Bungie that Marathon is delayed, so players will have a longer wait to extract the extraction shooter (thanks Amy). The game was expected on September 23rd, but it no longer carries a release date. But game development is a marathon, not a sprint, and the plan is to share a new release date in Q4 along with a reveal of progress made since then. Word is the change is prompted by the response to the closed alpha, and this is being called an opportunity:

Through every comment and real-time conversation on social media and Discord, your voice has been strong and clear. We've taken this to heart, and we know we need more time to craft Marathon into the game that truly reflects your passion. After much discussion within our Dev team, we’ve made the decision to delay the September 23rd release.

The Alpha test created an opportunity for us to calibrate and focus the game on what will make it uniquely compelling—survival under pressure, mystery and lore around every corner, raid-like endgame challenges, and Bungie’s genre-defining FPS combat.

We’re using this time to empower the team to create the intense, high-stakes experience that a title like Marathon is built around. This means deepening the relationship between the developers and the game’s most important voices: our players.