Yup. Basically, if they're pre-Kuuga, they've been made, and remade, and possibly remade again as a RAH. BLACK came out as a "DX" (improvement over the original version) just last year, followed by RX. I think it's an alright figure, but not the best RAH there (to see what they can really do, check out the DX versions one of the original 10 Riders.) Maybe when they do the smaller 220 version they'll improve on it.
The actual Project BM! figures (not counting the non-Rider ones) have been:
Rider 1 (THE FIRST & THE NEXT)
Hongo (THE NEXT) *exclusive
Rider 2 (THE FIRST & THE NEXT) *exclusives
V3 (THE NEXT)
Shocker Rider (THE NEXT) *exclusive
Hibiki
Hibiki Kurenai *exclusive
Hibiki (Human) *exclusive
Kabuto
Dark Kabuto *exclusive
Tendou *exclusive
Den-O (Sword Form)
Den-O (Plat Form) *exclusive
Momotaros *exclusive
Nega Den-O
Negataros *exclusive
They did a sandy "Future" Momotaros as an exclusive too. Aside from the Hongo, who was a Figure-Ou special, you can usually get the exclusives just by buying the original figure with the purchase ticket and then ordering by mail or online (but they won't ship internationally.)
NEW Den-O, Kiva & Decade are all going to be BM!, but like I said the Kuuga and Agito are being sold under the normal RAH banner (and presumably so will Ryuki, etc.) But again, I stress that there's barely any difference between them aside from the name; they're meant to go together and they often share release day slots.