The Harvests...

[anagogy]

So does the next Octave already exist, or is it in potentiation, waiting for us?

In my opinion, Gemini Wolf, it does already exist, but that statement completely depends on your frame of reference.

When I say it "already exists", that can only be said from a perspective of looking at this from "outside of time" as it were. As an analogy, tomorrow has not happened for you, the personality that is reading these words yet, however, there are future versions of yourself, that have already experienced it.

Does that make sense to you?

From the perspective of All That Is (7th density) the next octave is not yet. From the perspective of All That Could Be (8th density) all octaves already exist, for it is the container of ALL infinity (of course, that's just an expression, as infinity doesn't actually have a "container", it's an unbounded essence).

Ra has said their have been wanderers from the next octave of densities, in not so many words.

Read this:

81.18 Questioner: Why does Ra not have any knowledge of that which was prior to the beginning of this octave?

Ra: I am Ra. Let us compare octaves to islands. It may be that the inhabitants of an island are not alone upon a planetary sphere, but if an ocean-going vehicle in which one may survive has not been invented, true knowledge of other islands is possible only if an entity comes among the islanders and says, “I am from elsewhere.” This is a rough analogy. However, we have evidence of this sort, both of previous creation and creation to be, as we in the stream of space/time and time/space view these apparently non-simultaneous events.

So apparently, all these "waves" of relativity (or sets of seven densities) exist in the plenum of the octave density, and some entities (or portions of energy I guess?) choose to go back to the previous illusion of densities or forward to the next octave of densities.

It may be that one is not better than another, but rather, simply different. But then, that would beg the question of "why the refinements in the first place"? For fun? Interesting to think about.