The night between yesterday and today, Bandai has released photos for all the toys that will be released in June (including SRC Grendizer, yay).
IIRC, everytime this happens, pre-orders for said toys go live the next day, so I'd expect pre-orders for ther RVF-25 to open between today and tomorrow.
Edit: But I forgot that tomorrow is Saturday in Japan. In this case, I don't know what to think.
Edit2: I forgot what day of the week we are in. Bioclock completely messed up.