It'll end with 11. Your article says Diesel's idea to split part 10 into two movies is now a reality, and they're trying to get Lin to direct both of them now.
Maybe it would help of Fast & Furious 11 was in the article's title,
like here?
I liked the idea of more spinoff movies (ex: Hobbs & Shaw 2), but looks like they only thing they've planned out is F&F part 9 (already in the can) 10, and now 11.
However they do it, I'm positive it'll strain credulity. But once they seemed dead set on making Deckard Shaw a hero (and I guess by extension his brother) I knew at least Han's death would eventually be undone. Don't be surprised if Giselle returns as well.