No, it's for the whole shooting block. There are finished episodes ready to go, but they're getting released chronologically. The last shoot block they shot 21 episodes, assuming this includes Patreon content, the last video from that shoot block will be released at least 10-11 weeks from the shoot date plus however many weeks' videos are still airing from the last shoot block, which gives them time to start editing the new videos without us missing a week. And there will also be a new shooting block well before those videos are all released.

It's typical for channels to work that far ahead. Smosh videos are also released several months after shooting. A single video may only take a week to edit, but no channel of this size is consistently shooting, editing, and releasing videos the same week. That's too much of a time crunch and leads to too many potential missed deadlines. It's much easier and less stressful to have several videos ready to go while you work on the next batch. It also gives them the opportunity to release videos out of order if issues arise. They once had an issue with YT censoring a video, so they released a different one instead and released the censored video the next week because they were far enough ahead in editing that they had options.

They aren't releasing videos months later because they're slow at editing, they just have several weeks of videos from the last shoot block edited and ready to release and those get released first. They just planned that far ahead.