I guess the list provider has some solid info. According to this and the comments added to the list, the followings have higher possibility for realisation.
中島知子 (Tomoko Nakajima) (Debut incoming)
細川ふみえ (Fumie Hosokawa) (AV rumor Emerging)
And for the dreamers for future debuts, I attached two pix for each of those slightly older ladies.