I was going to make a joke about "recap" being obvious, but then I thought that maybe recap could actually be about things we haven't seen (like flashbacks). It's still more likely for it to be just a recap of the three groups scattered about, but who knows.
The first "Episcopalis" is when Akira is finally back, following "miserably ever after" (himawari's intervention ?), and helped by gossamer
If that trend is to be followed, then this episcopalis would be them escaping the time travel. It's weird to me if that's the case cause it's one of the earlier events, so probably not. I think it's more likely that episcopalis actually refers to the presence of a higher god, much like gossamer, it's likely that this event will also be presided by a higher entity.
Yellow patch is likely to be about Himawari, or Ami, or the first yellow patch - they all represent the same thing, following the original yellow flower that Akira used to concentrate to run from his troubles, then Ami became that flower for him, and later on it was Himawari's turn.
"God of light" and "waiting room" are... well. Let's just say i'm very anxious and worried for this update, like few before. Especially cause of the "what we'll see when we get there" cause I really really wish we don't end up in a cliffhanger until 2025. I fear what may be coming.