I just checked Google Takeout, it's not listed there yet.

I think that's because it's dropping it right on your Google Drive. It's taken out by nature, all the time, whenever you sync.

I don't find my notes in drive. Except for the URL there seems to be me no connection to drive.

You're right, neither do I.

But tfa clearly says, "Your notes are safely stored in Google Drive and synced to all your devices so you can always have them at hand." - So, I dunno.

EDIT: dammit, down at the bottom - last line - " in the coming weeks you'll be able to do the same[view,edit,etc.] directly from Google Drive."

Ah, I guess that settles that, then.

I've created a test note and force synced both Keep and Drive, and I also do not find my note in Drive.

I do hope that Drive will contain Keep notes, though, as that would seem like an optimal solution.