When you submit your app you can opt for Apple to release it immediately upon approval, or wait for you to manually release it.
Mozilla likely submitted the app a couple of weeks ago and just hit the release button today.
Mozilla likely submitted the app a couple of weeks ago and just hit the release button today.
But for comparison, Firefox for iOS, a MUCH larger app, has had perfectly predictable review times for the past couple of releases: 7 days in the queue, few hours for review.
Focus was 7 days in the queue and then a couple of weeks In Review.
It happens. To all of us.